Algae!!!!

[PoolDoc]

Yes, instead of 3 gallons, you'd need 7. Surely, you have a Walmart nearby where you can get 6% stuff?

You need to remember that, with algae, if you're not winning, you're losing! When it recovers from your chlorine doses, it's as if you never added them. So essentially, if you don't add enough to kill the algae, you're simply wasting what you do put in.

[DEBKNTX]

OK, now we are cooking with gas!! errr, well 6% chlorine at least!! We have a sock of Cyanaric acid hanging under the water return, new readings are this,,,, FC 2PPM, 0.2 Combined, PH 7, Alk 30PPM and Cal 40PPM, we are leaving the pump running low 24/7, just added a bit more water due to evaporation and running the Vac and brushing sides daily.
Water is still green but appears lighter.
Is there anything else we need to do or test?

[sabres07]

I am a new user this spring of this forum, and I had the same problem when I opened my pool this year. I thought I was putting in enough chlorine to shock the pool but was having no luck.

Then I found this site and followed the advice given TO THE LETTER (including buying the Taylor 2006c Test Kit) and my pool is now crystal clear. It works, it really does, but you first need to raise your FC levels to the numbers in the "best guess chart", and HOLD THEM THERE, NO MATTER WHAT IT TAKES! It's really as simple as that. Once your CC number is 0-0.5 ppm, you can let the chlorine drift down to normal letters. That is all there is to it, as far as clearing up the algae. Once that is done, you can work on those other levels ie: pH, Calcium hardness, etc etc.