Chlorine tabs w/o CYA

[CarlD]

I put the Cal-hypo tabs in my skimmer once and in 2 hours they were mush and the skimmer was jammed up....Not a fan!

[PoolDoc]

I don't think that's typical of all CH tabs. However, you could work around that in several different ways, such as putting them in a perforated plastic bottle that's resting in the skimmer.

[CarlD]

Interesting idea, but I haven't had to mess with it in years.

[zz28zz]

How does the commercial feeder work?

I have a chlorinator sys in the well house that uses a holding tank I fill with a bleach/water mixture and a chem pump (piggy backing my well pump) that pumps it in. Wondering if I could find some 100% sodium hypochlorite somewhere and use a similar pump to meter it in. I have a RS6 controller with a spare relay I could program to do pretty much whatever.

[FormerBromineUser]

Outta my league here. Just bumping thread cause I see you're checking for responses.

[CarlD]

Bleach is sodium hypochlorite mixed with brine, which is saltwater. Strongest I know of is nominal 12.5%, which, when fresh cam test as high as 14%.

[zz28zz]

I did a bit more reading and discovered 100% sodium hypochlorite is a solid, unstable and very hard to find. Guess that's out.
Wish I could find an alternative to buying gallons and gallons of bleach every week. Seems like there would be a market for CYA-free tabs if they were available.