First steps since refilling + waterfall question

[laughingboy]

I think I screwed up the timeframe for adding the CYA on my other post -- I actually added it the night of the 23rd, so it's been about three full days, but in any event I take your point. The CYA test is especially expensive in terms of reagents -- it uses 7 ml each time along with 7 ml of water. I've maybe tested 3 times and I'm already about halfway through my supply.

I suppose you could mix up less as long as it was 50/50 if your CYA level was high. That doesn't do me any good right now. They really need to make a more sensitive reagent :-)

[CarlD]

The CYA test is intensive. I actually have a pint bottle of the reagent in a closet to refill the little bottles in the kits.

Unless your waterfall is a dribble, it will aerate your pool. Hate to say it, but the builder is probably wrong. Even pointing your returns at the surface aerates. On one of the few times I needed to lower TA, I used a cheap fountain sprayer the screws into the return. It was a lot of fun for the kids and worked very rapidly to raise pH.

As Watermom said, CC is a bell-weather. If you have a measurable level of Combined Chloramines, it means your chlorine is working to metabolize something, so you may have to shock your pool to get rid of that "something".