Quote Originally Posted by Watermom View Post
The pool is using little chlorine because the water is cold, but when the weather starts to warm up, if you don't run higher cl levels you'll have a green pool! We see it all the time. Since your CYA is 80-90, then you don't want to use any stabilized forms of chlorine. So stay away from trichlor pucks and dichlor powder. What kind of pool is this -- gunnite, vinyl, fiberglass? Also, go ahead and post a full set of current water testing results.
Yeah, the CYA level is my biggest fear with the trichlor pucks which is what I would most likely be using. I would like to do the BBB method but again I think my girlfriends parents would think I am crazy if I was out there pouring a gallon of chlorine in the pool everyday. I think they would feel better with me just using the pucks. Next time they leave town I'll just drain half the pool, haha. I think for now I'm just gonna continue using the pucks and monitor the CYA levels and if it starts to get too high and the chlorine demand becomes to great I'll consider swapping out some of the water or switching to liquid chlorine.

Here are the results from the store test:

TC: 5 ppm
FC: 5 ppm
CC: 0 ppm
pH: 7.6
TA: 100 ppm
Calcium: 250 ppm
CYA: 80 ppm

Oh, and it's a screened in gunite pool.