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That's great to know! Yes, that was the theory behind the question.

If there are 3-4 people in a 400 gallon hot tub for an extended amount of time, is it safe to add 1-2 oz of 12.5% bleach in the middle of the tub with jets on OR would you recommend people get out briefly? I"m in MN so getting out for a bit can be challenging for some when it's cold. I was...

I would like to get the larger Taylor 2006 C case that holds the larger regents. Anyone want to sell or give away an extra. I'll pay shipping of course. I can send check or use PayPal.

That's a GREAT idea! Thanks, Doug

Based on what I've read on this site, I wanted to see if this is correct........... Let's say 1 person gets in a hot tub with 2 PPM free chlorine. The person soaks for 1 hour and creates the average of approximately 7 PPM of free chlorine need. The person gets out and adds enough liquid...

I should have first looked in the TFP pool school Table of Contents - Trouble Free Pool I've read several of the articles in there and they are awesome. Anyone with a new pool or hot tub should probably start reading the entire TFP pool school first. For me, doing that would have...

That's what I thought I had heard. I'd like to read about the chemistry of a SWG and how the chlorine that is generated from splitting the salt (sodium and chloride) does NOT get used up like the Chlorine in liquid chlorine does. If anyone knows of a good article about this, I'd love to read it.

I installed a SmarterSpa SWG on my 400 G. hot tub. The Smarter Spa lets you control the max free chorine by adjusting how long it runs AND the minimum free chlorine by adjusting the sensor for when it turns on. What max and min free chlorine would you shoot for as I adjust it? My tub is most...

Thanks for clarifying! Will salt likely get too high occasionally if I'm using liquid chlorine and Muriatic Acid occasionally? One thing I don't understand about SWG yet is.......Does salt PPM lower with use (if no other salts are added like liquid chlorine and Muriatic Acid) OR does salt...

I added a SmarterSpa SWG today. Before I added the salt, my Taylor Salt Test and test strip showed about 1200 PPM of salt. I added 2.5 cups of pool salt to my 400 g. tub and it brought it up to 1800 PPM. The Smarter spa indicates that salt is in the correct range which they say is 1500--2000...

I have a Taylor 2006 kit but have added a few things like some bigger regents, TFT CYA tube, MPS regent, and thinking about adding a speed stir and a few extra tubes to go along with this. Any suggestions on cases that are not too big but hold everything without tipping?

I like being "ahead of the Jones's" AND attribute most of my understanding of accurate hot tub care to THIS SITE. Thank you!!!! Doug

I have my CYA at 25 but am adding a SWG. I've seen posts here and other places that say SWG hot tubs should have a higher CYA but that does not seem correct. Mine is outside but it is covered most of the time except when it's being used or I'm trying to burn off extra FC or CC

I just bought a SmarterSpa SWG and the directions say I should drain my tub and refill before adding. Do I really have to drain it? I can't figure out why this would be necessary. I have a 400 g. hot tub that was drained about a month ago with 2 Ahh-Some purges. I have used the...

Thank you for clarifying.

Thanks everybody for your experience with this. Based on what youre saying, I see why most people use the Taylor kits. That sounds like a good path for me now.

jseyfert3 I'm curious why it's a problem for FC to drop to zero if the unit starts to produce chlorine once it hits zero. If the spa is at zero just for a very brief amount of time, how is that a problem? (not trying to argue here....I'm sincerely just trying to better understand). If...

Thank you for the heads up about the issues with cold weather. Definitely a potential issue where I live (Minnesota). I was aware of the temperature sensitivity of the power supply. I plan to mount it in the main compartment with the pumps, heater, etc. My sense is that most power supplies...

I would splurge and buy the Controlomatic Smarter Spa. $430 on Amazon. I think that is the only system I would consider if I had a rental. I don't own one but thinking about buying one soon.

I've had a hot tub for several months. I was struggling to get accurate information about hot tub chemistry, products, etc. from retailers, the web, etc. Then, I found this site. I SOOOOO appreciate the expertise, generosity and time of awesome members of this site. I have learned so much...

Ooops.....I used about a gallon of Chlorax bleach with Cloromax over time in my 400 gallon spa since refilling using the diclor/bleach method. I did not realize the Cloromax bleach is bad. Should I drain the tub and refill? Is the Cloromax bleach unhealthy, bad for tub parts, etc? Thank...

I'm thinking making the switch to SWG. I'm leaning toward getting the SmarterSpa model ($385 on Ebay right now and about $430 on Amazon). Are there any models that you think I should consider instead? I would like a model that self adjusts (waits to run until FC drops to a low level) like the...

Curious if any of the digital meters (not the ones that use regents) are accurate for PH or Free Cl or Total Cl? Do you have any specific recommendations for accurate ones that are under $50? Thank you, Doug

I'm not going above slam level. at times, however, when I shock it, the FC takes too long to come down naturally

I've seen some articles about borates and hydrogen peroxide creating a chemical reaction that can be useful for a variety of chemistry purposes but I don't know enough about chemistry to understand if this reaction would be unsafe in a hot tub. Here are a couple of the articles for the chemists...

I read the ABCs of Pool Chemistry early in my hot tub process but I agree that reading it again would be a great idea since my understanding of the Chemistry of hot tubs has increased a LOT due to this web page. Thank you for the reference about CSI and I will read more about that.

I've read a lot of things that say that Alk should not be lower than 80. Below 80, I've read things that can happen like Etching of pool plaster, vinyl liners become stiff and brittle AND Corrosion of metals in ladders, handrails and heat exchangers. Do folks believe that is true in hot tubs...

I have been running a used hot tub for about 9 months. LOVE Aww-Some for my purges and it gets out WAY more gunk than other things I've tried. Curious if Ahh-Some removes scale build up on the lines, pumps, heaters, etc? If not, do you recommend a scale remover? I'm trying to keep my tub...

Sounds like SW pools are awesome to me. Do all of these same benefits and lack of drawbacks apply to hot tubs too? Thinking about switching over to a SWG in my hot tub. (I hope this is not hijacking the thread but folks had some great info on SWG and I'm curious if all of the info fits for hot...

I have a 400 g. tub and use Nature2, add MPS after every use and bleach shock about weekly. CYA = 22. Test everything with Taylor. Use tub generally with 1 person about 20 minutes for 7-12 times per week. I use Muriatic Acid (Acid Magic) to lower my PH which I know lowers my alk too. The...