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What is your Bromine level like when you are testing the Ph? I ask because high sanitizer levels will show (false) high Ph.

I have a 135 gal hot tub, and the issue I ran into with Pool Math and other apps is basically related to time vs volume of water. A 13,500 gallon pool has 100 times more chlorine than my hot tub, so while one person in the pool for 30 minutes wouldn't change the chlorine level at all, in a small...

You are absuletely on the right track. I bought a new hot tub last fall, after not having had one for 4-5 years, and was absolutely amazed at how much crud and scum was in a BRAND NEW hot tub! What you show in the pic and describe is what is called biofilm--scum--on this forum, and it is not...

Our hot tub requires 3 minutes a day to check the sanitizer level after we get out and add an ounce or two of bleach. Then once a week I clean and replace the filter, and wipe down all the above and below water surfaces. After that, figuring I have loosened up a bunch of crud, I give an extra...

You can crush the bromine tablets to help them dissolve faster. Do it outdoors because the fumes can be very potent.

Ch3cooh In my 130 US gallon hot tub, about 1 tablespoon of crushed up bromine tablets*, the kind used in a floater, seems to be about all that was necessary to establish a bromine reserve. * 55% 1 bromo 3 dichloro 55 dimethylhydantion (man, that's a big word, lol)

Re: Free shipping from tftestkits.net !?!? What luck--my girlfriend asked me what I wanted for my birthday, and I asked for a TF-100. :D It arrived today :D :D

Thank you very much!

Hi All! I've been lurking and reading a lot on this forum since early January when I got this spa, and really, really appreciate the wealth of knowledge here! I'm using the 3-stage bromine process and an OTO-type test kit. It's my understanding that you can't easily distinguish between chlorine...