Quote Originally Posted by chem geek View Post
You can certainly add Dichlor to your pool by just throwing it in, but just keep in mind that for every 1 ppm FC that you add (i.e. the amount that you throw in that produces 1 ppm FC), you also add 0.9 ppm (almost 1 ppm) of CYA. So if you are low in CYA, then there's no problem; otherwise, I wouldn't use the Dichlor. I suspect that since you are using Tri-Chlor in an automatic feeder that your CYA level might be high already. Have you tested it? Unless your pool is small-ish (10,000 gallons or smaller) and do frequent backwashing, your CYA is probably already too high due to your use of Tri-Chlor.

Richard
Not lately. 6 Months ago it was 0 (I stopped using Tri-Chlor for 3-5 months because it was high, over 100). Last time I check 4 months? It was low. I don't have a backwashing mechanism and I also don't drain and fill the pool (I also don't use the pool).

If I didn't live in FL (where the water level is high), I would of drain the pool 3 years ago ...

I guess, I just need to key an eye on the CYA if I plan on using this Di-Chlor stuff.


-d