Hypo-Chlor Tabs

dank58

Member
Jun 10, 2023
5
Austin
Can’t use normal stabilizer tabs because of CYA issues. Liquid works great but is expensive and hard to get at times. In Texas at A-Tex pools found some NST no stabilizers tabs, Cal Hypo tabs, anyone use these? Would help if they cause no other problems
 
Can your calcium afford to rise instead of the CYA ? That's your trade off. Calhypo tabs supposedly go mushy quick and don't last like trichlor, but I've never used either so it's just what I've read.
 
Cal hypo raises CH. You will get a roughly 6-7ppm rise in CH for every 10ppm FC added using cal hypo. Cal hypo also raises pH because it is a very alkaline substance (contains calcium carbonate and calcium hydroxide as a byproduct of the manufacturing process). Adding large amounts of cal hypo all at once can cause cloudiness from calcium precipitation. If you are using acid now the you will be using more in the future with cal hypo.
 
I had a bucket 3 years ago right after we moved in, before getting the broken SWG working. CYA was high and CH was low, so they made sense. (Kudos to Atlantic Solutions, the local family-run pool store. Their water tests matched Taylor consistently, too. Rare example of a good one, it seems.) The tabs dissolved fast: In a floater, lasted about 2 days. Also did everything the experts mentioned. CH and pH both went up along with chlorine.
 
Cal Hypo tabs, anyone use these? Would help if they cause no other problems

And in addition to what everyone has already said...
  1. You can't use Cal-Hypo tabs in a floater or other dispenser that has ever held the regular Trichlor (CYA) tablets. Cal-Hypo will react violently with any residue from the Trichlor, literally exploding.
  2. You can't use Cal-Hypo tabs in a floater anyway, because they don't dissolve cleanly like Trichlor tabs. Instead, they turn into a gooey blue mush that'll dribble out of the floater and collect on the pool floor. So you need a special Cal-Hypo dispenser for them.
  3. The calcium that Cal-Hypo tabs add to the pool doesn't dissipate or evaporate, it just accumulates. When the calcium concentration gets too high, you can lower it only with an expensive reverse-osmosis service or by draining and replacing water.
 
  • Like
Reactions: Mdragger88
And in addition to what everyone has already said...
  1. You can't use Cal-Hypo tabs in a floater or other dispenser that has ever held the regular Trichlor (CYA) tablets. Cal-Hypo will react violently with any residue from the Trichlor, literally exploding.
  2. You can't use Cal-Hypo tabs in a floater anyway, because they don't dissolve cleanly like Trichlor tabs. Instead, they turn into a gooey blue mush that'll dribble out of the floater and collect on the pool floor. So you need a special Cal-Hypo dispenser for them.
  3. The calcium that Cal-Hypo tabs add to the pool doesn't dissipate or evaporate, it just accumulates. When the calcium concentration gets too high, you can lower it only with an expensive reverse-osmosis service or by draining and replacing water.
Answers my question of added issues. Don’t need that. Salt water generator a better option?
 

Enjoying this content?

Support TFP with a donation.

Give Support
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.