Can you maintain a stable CYA and use an inline chlorinator?

[lauraleellbp]

This specific question is a continuation of my initial thread/discussion with Watermom (thanks bunches for all the feedback, BTW ) here http://www.poolforum.com/pf2/showthr...-from-Tampa-FL

So for those of you who do run inline chlorinators, how do you address the eventual accumulation of CYA?

[lauraleellbp]

No one?

How about a related question... how much would using trichlor tablets be expected to raise CYA levels?

I realize this is going to be different for every different situation- I'm not looking for an exact mathematical answer. Just a general "using trichlor tablets in an Pentair inline chlorinator could raise CYA anywhere from xxx to xxx per month/year" or something along those lines would be fantastic.

I mean, if we're only talking a few ppm of additional CYA per season- that's manageable. If we're talking 10ppm per month... that's something else.

[BigDave]

How many ppm of chlorine are you using daily? Trichlor will add 6ppm CYA for every 10ppm FC it adds. It will also push down pH so be sure to have Borax on hand to bring it back up. Also be sure to raise you chlorine targets as the CYA level increases.

[lauraleellbp]

I *just* brought my CYA from 0 to 70 ppm, and am still working on defeating a persistent algae bloom, so I don't yet know what my daily chlorine consumption is going to be. 6ppm CYA to 10 ppm FC is not what I was hoping to hear.

Hmmm

Does no one use inline chlorinators and maintain high CYA?

[BigDave]

You will need an unstabilized source of chlorine to win the algae battle.

[lauraleellbp]

Yep, I'm just using bleach now that my CYA is high. I had 0ppm before I used dichlor to bring that up.

I'm in the process of upgrading my filter, so having to re-do my plumbing. Trying to decide whether or not to install a Pentair inline chlorinator. I'd really like to automate chlorination somewhat if possible, due to an irregular work schedule. Trying to figure out if there's a way around one increasing CYA too badly.