Chemical free hot tubs!!!

Chemical free hot tubs!!!
7.3 Total Score

Every manufacturer has a miracle system that will make owning a hot tub easier, and healthier and safer.

In this Video, we take a quick look at the different options like chemical systems, Saltwater hot tubs, Mineral systems, UV systems, Ozonators, and Enzyme systems and weigh the pros and cons of each.

I usually delete sales pitches and discussion comments, these sales pitches/debates are for the FORUMS NOT MY BLOG SITE… and should delete this one but I’m on vacation and feeling feisty so get the gloves on Boyo you don’t have a clue…

Salt is old tech being regurgitated as some new miracle system stay far away from it…

Salt just gets you to 1-3 ppm of chlorine or bromine, and the damn anodes need service yearly. you can get 3-5 times lower chemicals with aftermarket stuff… Remember you are breathing that chlorine in… its nasty carcinogenic shit

And the freaking salt is corrosive as hell say goodbye to the concrete, decking, and everything else around the spa from the over splash…

Hot tub guys hate the fact that the aftermarket stuff like spa marvel or AquaFinesse get you to half a part per million of chlorine and are easier and way way cheaper… They like salt (and all the other bullshit expensive ad-ons for chemical reduction) because they make a pile of cash off the up sell and servicing the stupid machine… stay away!!!

RD you are either misinformed or a dupe, or work for the marketing arm of the scum bags selling this snake oil, the science is clear this is not good tech and is riddled with issues and is high chemical and prone to failure, with health and property damage issues…!!!

Manufacturers are milking this the pitch now and a good pitch can close deals but what they don’t want you to know is the easiest most chemical free systems have nothing to do with the hot tub. In fact, the lowest easiest systems can be used on almost any hot tub…

Bromine and Chlorine systems toxic

levels of 3-5ppm of toxic chemicals

These high chemical old technology but beware a lot of brands private brand the chemicals to make them sound like something else and to trick you into paying more for these base chemical systems.

Salt water hot tubs – Read More

levels of 1-3ppm of toxic chemicals.

Salt water hot tubs are not chemical free, hell they are not even close the lowest chemical systems available, They are finicky, unreliable and have big failure issues, this tech was all the rage back in 90’s and most guys abandoned it and now some companies are re-introducing it as new tech!!! It’s a gimmick, all salt systems do is make chlorine or bromine!!

New info-On November 30th, 2018 health Canada finished a re-evaluation of hot tub and pool salt generators and the additive Sodium Bromide and determined that these devices were a risk to health.

The US is expected to investigate and would likely follow suit and even if they don’t this hit to the saltwater hot tub industry might thankfully be the nail in the coffin for this outdated water treatment option.
At this time they have not performed a reevaluation on Sodium Chloride systems.
The decision removes approval for Products Containing Sodium Bromide as well as Chlorine Electrolysis Devices


Every hot tub has one and you really don’t care about them, they do help but they only work well for about a year and frankly, it’s not worth spending the money to replace them your money could be spent in better places. They are a good helper system but nowhere near good enough to stand alone.

Enzyme systems – good –

These can be used in any hot tub and are far better than any of the onboard systems, they will let you get down to the same or lower levels of chlorine or bromine than the salt systems, for far less and you will have an easier time balancing the water. These work by breaking down inorganics like greases, oils, sweat and lotions freeing chlorine to deal with only the organics. You can order the Spa Marvel Enzyme system from us, Spa Marvel (US), Spa Marvel (Canada)

7028297-natural-water-dropsMineral systems -good-

Drinking water levels of chemicals These are arguably the best way to deal with your water, they are fantastic for your skin, in fact, Aquafinesse, the number one brand out there is used in hospitals in Holland to treat eczema on newborn babies! This system is by far the lowest chemical, easiest to use and best for your skin. hot tub companies hate it because you can use it on any tub and it is around the same price as the big onboard systems over time, and there are no parts to fail! Plus you can go 2-3 times longer without changing your water.

UV Systems – very good but expensive –

Probably the best onboard systems out there, this is the exact same system used to treat drinking water in large municipal water treatment facilities and in rural areas to treat well water to make it drinkable, Expensive and requires yearly service at around $300/year but in conjunction with ozone and a mineral pack can get to near chemical free.

Right now that’s the hot button so

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Love the website, lots of information. I have told my dealer and many friends about Hot Tub University and how helpful it has been. We purchased a PDC tub based on your recommendations. We found a dealer within 5 miles of our home. Installation next week.
We are going to use Spa Marvel, my question is, would using a mineral system with the Enzyme be a good idea as we are trying to reduce chemicals as much as possible. Mostly 2 users, birthday suits, daily use. Not sure if its overkill or would they interfere with each other.
Thanks again.

Alice Brown

Just heading off to see Portland, OR hot tub expo. Looking for a 2-3 person tub, hubby is 6’3″ so crawling in is a must. Have been reading your info and am totally lost now on what brand to get. We want low maintenance. Only 2 of us using, no parties. We are not regular users, mostly will only use after yard work or strenuous days. So more like on the weekend for under 1hour. Again low maintenance and minimal chemicals with a hard plastic type cover that is easy for 1 person to open. Semi quiet would be nice… Read more »

David Skelding

Hello, have been following this thread and love the info presented. Thank you for what you do. We just purchased a neighbor’s Cal Spa and moved it over this past weekend. Getting electrical hooked up this week and want to get up and running as soon as possible. Have some questions regarding this process that I wanted to run by you. Number one, the spa hasn’t been run in probably six months. The previous owner did his best to winterize it and drain all the water. Even still, we’re seeing temps in Indiana this time of year ranging from the… Read more »

Elizabeth Markell

Hi there, We bought a house this past March that happened to have a hot tub in the back yard. It is a Marquis/Celebrity brand Napa model. (i know this is not the optimal brand, but it is what is here) At first I used it a few times but then got distracted by various life issues, and so it has been sitting barely used for months with the heat up at around 90 and nothing being put into the water. It currently has a sprinkling of some brownish(slightly greenish tinge) residue on the surfaces and fittings under the water.… Read more »

Larry McMillan

I purchased a home with a Marquis Hot Tub. How do I determine which model it is, as I need a new readable Control Panel, since the original C/P is mostly unreadable. Any thoughts for getting and installing a new C/P are appreciated, as well as the best chemicals to use. Thanks!!

Matt Hoy

Hey Chris,

We’ll be buying a Master Spas tub this weekend, any chance you could email us the tip sheet on how to maintain low levels of chemicals? Thanks for everything you’re doing!

Matt & Masha


If I have a frog in line system, can I use spa marvel along with it? What would the chemical schedule look like?

Helen Curry

Hi Chris, We have bought and installed a second hand Arctic Spa Ocean swim spa in good working condition. I am feeling overwhelmed by the choices in maintenance. From your site, and others, I gather that Aqua Finesse is recommended for low chemical water quality, which is my wish. I see that they have a special swim spa kit. I would like to get this right from the start, so I would appreciate your detailed advice of what to do. I am about to fill the spa with water, which is from our well, and likely quite mineralized. Can you… Read more »


Hey Chris,

We’ve been enjoying our Twilight 8.2 for nearly a year now – thanks for sharing all your knowledge and recommendations!! We’re considering taking the Spa Marvel plunge. Can you please email me your cheat sheet and tips? Also, do you have any recommendations for good/affordable shock and chlorine tablets? Thanks for all your help!


Hey Chris,

Great you tube videos. Looking at the dimension one brand hot tub. Meridian series. Have you herd anything about them. Was looking at the vector 21 and you talked me out of that one. Thanks


I am looking and buying a 5-6 person hot tub, hot in the summer and cold in the winter can go into the teens for alot of the winter what brand would you recommend

Alexandria Zayer

Hi Chris! Thank you for all the information on your website. We are looking at a Passion Hot Tub. I have not found any information on Passion on your site so was curious what you think of it as a brand of hot tubs? The specific one we are looking at is The Malta. The insulation it comes with is High Density Urethan Insulation. Is this a good insulation to have that will be energy sufficient? Also, I loved your video on Chemical Free Hot Tubs. This really helped me understand we are not missing out on the “natural” salt… Read more »


Chris, I was going to get a hot tub last year, and balked. This year, I am flirting with the idea. I am being contacted by a company called Hot Springs. Of course, they think they’re the best. I look at reviews on Consumer Affairs, which were mixed at best. What are your thoughts on that manufacturer? They are having a “truckload sale” and offer a salt water free system, 7 seater, for $9K. Normal price $16k. When something sounds too good to be true……..

Hi Rick, The fact that they still want to sell at that price difference is telling, Hot Springs is one of those brands that sinks more money into branding and marketing than into building a good hot tub. They have lists of features and everything on it will sound good but there are corners being cut on the shell and beneath the skirting. Closed cell foam that turns to rock and makes service a nightmare, a thin cradle supported shell that is hard to repair and easily damaged, plumbing with no clamps etc… They also get you trapped with Proprietary… Read more »


Can you email me your cheat sheet for how you maintain your water with the low Chlorine reading as well? I bought a twilight series 6.2 after finding your website and I am so grateful for your wisdom. I will have the eco pure system but I didn’t add any upgrades. Thank you

Bennett Darnell

Hi, Chris. My husband and I just bought a used Master Spas Twilight 8.2. Am ordering Spa Marvel thru you, but could you tell me what chlorine system you use in addition, with the little floating gizmo I see in your video? Also would love to get a few names of independent technicians in my area, as well as the tip sheet for doing maintenance (chemicals, cleaning, etc ). We’re near Boone, NC (northwest part of the state).



Chris. I am just doing my research before I embark on purchasing my hot tub and I stumbled on your excellent website. As I am in the UK I am limited on the choice of hot tub, although I was looking at Vita Spas, you have changed my mind and I am currently looking to get an Artesian Spa (Island Spa). So the question is because these use a continuous filtering pump do you recommend using AF, Spa marvel or can both be used?


We are operating a new Hydropool swim spa (1700 gal) and a new Sundance Hot Tub (425 gal) – they are both currently bromine systems. We are researching your sites and would like to know where to go to to learn about converting to a healthier water/tub maintenance system. Having listened to and read a bunch of your videos and replies my first question is are you recommending AquaFinesse or Spa Marvel ? Again, can you direct us to your site that will provide us with details of starting up a new tub (our Sundance hot tub is being replaced… Read more »

Christopher Smith

Hi Chris, I will be getting my first hot tub delivered this week, and I am so confused as to what I should be using to keep the water clean and sanitized. I have been watching many of your videos and they are very informative so I am hoping you can clear things up a bit for me. What I am planning to do is use aquafinesse and blue something (I for get the name but it is copper ion based). Will this suffice or will I still need chlorine? At what levels should I keep everything? I really want… Read more »

Chef Bambu

Great fricken website and information. My bride and I are getting ready to buy a two person hot tub and would like to know if you have a favorite brand that I can add (if need be) an AquaFinesse system. Can’t tell you how much I appreciate your help. Gracias por total mon.

Terry Britner

Chris this is Terry Britner I just wanted to let you know that your suggestion to lower my chemical level of Chlorine switching to Aqua Finesse was a great suggestion. I had trouble With the chlorine level of 3 to 5 ppm and change to Aqua Finesse which allowed me to take the chlorine level down .5 ppm. Because I have asthma are used to have to wear a respirator to filter out the warm chlorine gas of the hot tub. Now using Aqua Finesse and carrying a .5 ppm chlorine level I don’t have to any longer. The side… Read more »


Hi Chris
We just ordered a new hot tub and want to go with a more natural approach to keeping it clean. I have been watching your videos on YouTube about Aquafinesse and wonder if there is any difference in the Aquafinesse vs the ClearChoice is one more reliable than the other. I couldn’t find many videos on YouTube in regards to the ClearChoice and not many reviews so not sure if this would be a good company to work with. Would you recommend one over the other? Thank you for all your help.


Hi Chris. Getting our tub delivered this week and want to set up right from the start. Will do a full clean and drain before filling again for use. I’m leaning toward using the aqua finesse, however only 1 place in our city seems to sell it, so not sure if they carry the full product line or not. Does it matter what product you use for the cleaning, if they don’t carry the AF cleaner? As well, our tub has the uv system; any tips or anything we need to be mindful of with using the AF? Thanks!


Thanks so much

Ryan Hewson

Chris, i’m looking for the video on Aqua Finesse. Do you have one? I have a jacuzzi j230 that was given to me from a family member….it is getting ready to get fired up after being winterized last year. I was going to go with the control o matic unit and use dead sea salt…..but you have me thinking twice.

is there a video? would you send back the contol-o-matic and switch to the aqua finesse?


Hi Chris, we got our twilight 8,2 this week and are just loving it! Thx so much for your site info. Do you have a tip sheet for using the marvel spa enzyme? I called them to better understand how to balance my water before I added the bottle and it seems their ranges are a little different from what I see in your posts below for aquifinese. Also a little unsure how often to add chlorine and shock. My bather load is 2 to 4 people about 5x week and they suggested 1 tspclorine after each use and shock… Read more »

Hi Lisa,
It sounds like there was some kind of miscommunication, in particular with the shock use, you want to be using roughly 1 capful of shock after each use or 2-3 capfuls if you have 3 or 4 people. Chlorine you want to be using between one to two tablespoons per week, if you can smell it on your water that is generally too much. Local regulations will probably suggest higher though.
I’m sending you an email with a tip sheet and a few points of my own.


Hello! Love your site.

So, we purchased a TS 67.25 Master Suite and we are loving it. Thanks for the advice on checking them out. We are spa newbies and hadn’t thought much about chemicals and proceeded to us Master Spas right away. Upon reflection, we would like to use Aqua Finess (we just purchased their granular sanitizer water care system) Now that we have already started using Master Spas stuff, do we have to wait until we drain the tub before starting with this? Please say no!! (thanks in advance!) Stacey

John Kirsch

AquaFinesse seems to be a starter kit with chlorine granules, aims for 1-3ppm. This is not what is said on video, how come you say it’s your favorite?


Hi Chris, I am SO happy to have found this site and your videos. I almost fell into the Hot Springs trap since it is what is sold locally. However, I found a Master and an Artesian dealer within an hour away. My question: In the Twilight brochure, in the fine print, under water management systems, it states you must have the QuietFlo water care system (24/7) if you want the MasterPur system…but isnt that a circ pump, which you say is not a good thing to have? Also-if I consider the 8.2, what ‘extras’ are a MUST add on?… Read more »

Kim W

Hello there! Awesome info and site. Thanks Chris!
I’m in Smiths Station, Alabama zip:36877
Looking for a 7/8 person spa including: hydrotherapy, chemical free/Aquafinesse, somewhere between $10-15k. After reading a fair bit of info on your site and elsewhere I’m considering Marquis or Master. Do you have a recommended model and dealer?

I have a lead on a Marquis Epic which the dealer is very motivated to sell. Thoughts?


Hi Chris – thanks for all the sharing – I purchased a MasterSpa TW 8.25 with the EcoPure filter and have been very happy with the purchase over the past month. I am struggling with the chemistry. I am still using the starter pack MS provided, primarily Spa Boss Spa Plus product to add Cl. According to the distributor, the Spa Plus chemical acts as a sanitizer (34% Cl) then transforms into another chemical as it reacts with the residuals in the tub – so my free chlorine reading go from 5 ppm to 0 in just a few hours.… Read more »

Debbie Anderson

Hi Chris, Love your information and knowledge that you share and thank you immensely! I have a 2017 Master Spa Legends LSX700 and would definitely love to find something other than the standard chlorine chemicals that i have been using. I’m interested in switching to the AquaFinesse system, but since being a newbie to hot tubs, I’m not well educated enough to know if this is possible. My tub has the ozone, UV AND EcoPure mineral filters. Can you offer some guidance on what i need to do to convert to the AquaFinesse? It’s time for a drain and change… Read more »


I have a hot tub that always makes me itch and usually I get a rash on my torso and lower legs.
I shower and use lotion after being in the tub and I still get very itchy.
I feel getting rid of the chlorine can only make it better.
Does the aquafinesse require much chlorine?
BTW, I have a smaller tub 250gal that my wife and I use once a week for 1-1 1/2hrs.
Our previous tub was about larger and we could sit in it all day on weekends with no problems if I took a shower after.
Any suggestions?


Hi Chris, Thank you so much for this site which has a wealth of info! I just received delivery of my 14-ft swim spa (1700 gallons). It sounds like you highly recommend Aquafinesse. I was looking at their site and they have a swim spa specific product that are disks that you put in weekly. Do you know if this product line is as good or have you had any experience with it? I love the idea of being about to keep a lower chemical level. Also, I was deciding between bromine and chlorine and had kind of settled on… Read more »

Tom Porter

Any opinion on Bullfrog Spas?


Hi I appreciate your website thank you so much. My husband and I purchased a refurbished hot tub last year and just a few months ago finally finished getting it installed. We’re ready to get it filled and start using it. I really am not a fan of chlorine or bromine and would like to go with something natural currently were looking at the ahh natural (which is a pad I believe) and clarity. What are your thoughts on either of these? Or is there a better choice. Our hot tub is a Phoenix with all new balboa components. Thank… Read more »


Hey Chris, I live near Phoenix and am leaning towards a Caldera Silina at the Hot Springs store, mainly because of it’s low maintenance. Between the ozone and two cartridge or packet system- one is replaced every month for $15 and the other every 3months at $25- the upkeep is fairly low. We had a hot springs Classic F with an 24/7 circ pump and i only added extra chemicals when we had a few people in. When it died i got a Divine Nature but it had a ozone pump that only worked when the main pumps were on… Read more »


Any advice for a spa novice? We purchased a new BeachComber spa less than 2 weeks ago. I broke out with what the doctor says is Hot Tub Rash after only a few uses. As instructed we used the Spa Marvel cleaner, drained the spa, then used Spa Marvel Conditioner. 5 days later I have the rash. What could we have done wrong? I know you might not be able to answer, but I highly respect your advice!


Have you heard of ‘Natures Hot Tub Treatment’? A non chemical enzyme water treatment.
I am in the process of buying my first hot tub (possibly a Bullfrog, Caldera or Master Spa) and want a chemical free water treatment solution.
What is your opinion? Also would like your opinion on the 3 hot tub brands I mentioned. What is important to me is quality of components, low energy cost, ease of use and ease of maintenance.

Mark Newbigging

Just got my master spa on the web site it said to use a pre filter and put some metal x stuff in our spa marvel good enough thanx


I see how you highly recommend the Aquafinesse mineral system over anything else. But I am wondering (as I am in the process of buying a spa) how you would feel about a combination of the Aquafinesse and the UV light on a twilight or HL series tub.


The first part says stay away from bromine but the last part recommends aqua finesse but their solution uses bromine as well. Can you clear this up?


I am deciding between a master spas twilight series and sundance chelsee. I want low levels of harmful chemicals and don’t want to spend a lot of time and money doing it. I don’t mind paying a higher up front price for extra features like UV and Ozonators if it means lower total cost of ownership over 5-10 years. it seems your suggesting using minerals in combination with chlorine. I understand this extends the water lifespan, but the mineral products sound expensive month to month (aquafinesse runs close to $40 per month alone?). What is the best combination of TCO… Read more »

Renae' Key

I have almost decided to get a Twilight 8.2, but I don’t have a dealer in my town. The nearest dealer is a little oven an hour away, & has only been selling Master Spas for a couple of months. They carried Hot Springs for 20 years, before switching to MS. I have a D1 dealer almost in my back yard. Should I get the 8.2 without a local dealer, or get a lesser quality tub with a local dealer? Also, if I order the Twilight is it worth getting the UV system…considering the up front cost & the yearly… Read more »

Tommy Campbell

Hello, I just purchased a new spa, HotSpring Grandee NXT. I was hoping that you could help me with determining which products from AquaFinesse to purchase. The spa gets delivered this Wednesday and I’d like to start it up on this system from the beginning. There’s 3 options from Amazon in regards to the AquaFinesse product; di-chlor, tri-chlor and bromine. If I have to choose, I think I’d rather go with the bromine system, but I can be convinced otherwise. Is there anything else I’ll need? The folks at the showroom want to sell you everything under their roof so… Read more »


Is it worth the master 3 pure water system on the master spas as a option thanx

Mark Newbigging

What is the garden liesure brand like they use clamps and the good foam for insulation but is the rest any good what base would you use to put a tub on is concrete pad any good thanx


I have been look8ng at Artesian Spas Island Elite Series or Island with Microsilk but confused by the water purification systems. They have Crystal AOP and Diamond APP which bot reference UVC. What is the difference? Are either of these the mineral water and UV systems like the Aquafinesse you reference?

Also interested in any comments on the Microsilk product. Not looking for any miracle cures…just a fun and different way to get lots of little bubbles…or does it feel any different than the air injected into the jets?


I am planning on purchasing my first hot tub this fall and an overwhelmed at the options. I want as low chemical count as I can get. It seems like the mineral option is the best combined with a UV system. So many of the sales guys tell me certain systems are only available in specific models, generally the higher priced one, and cannot be installed in the lower models. Is this true for some reason? I don’t need anything fancy as far as lights and stereo goes. I just want a comfortable tub and as low maintenance as I… Read more »


Hello, I’ve contacted in the past about best tub to buy, but my parents have just decided to get rid of theirs so we are going to be the new owners. It’s not the one we would have bought new, but best for our budget right now. It’s a 10 year old Hot Springs Grandee. My mom has kept it in pristine condition & always been vigilant on keeping the water clean. Now that I will have it, my children will be in it a lot & my husband plans to relax each night for his bad back. Questions as… Read more »

Sarah Mathieson

Hi there We bought the Master Spa legacy after your feedback and it’s just been delivered. It comes with the EcoPur filtration system. I have been through the ‘starter’ box of chemicals as the water will go into the tub tomorrow, and am now feeling very panicked as this is our first hot tub… You mention using Spa Marvel or Aquafinesse – can I ask some daft questions… would the Spa marvel trio (cleanser, water conditioner, filter cleaner) totally replace the whole set of stuff from Master Spa or just some of it after the initial set-up? I was thinking… Read more »

Brian W

Hello and thanks for the wealth of information. I have a couple of questions for you: 1. you recommend master spa. we have a pretty good deal quoted for the healthy living 8 foot spa (i think)–it includes the uv light and circulator pump. 2. what is the difference between the 8 foot clarity master spa and the 8 foot healthy living spa ( the healthy living has a higher jet count and slightly larger pumps, but otherwise structurally or component wise is there a difference)? 3. What would a good price be for the 8 foot healthy living spa… Read more »