Cyanuric Acid

[aylad]

PS I got my cya down to 85-90!!

Yay!!

Now at least it should be more manageable. Your other numbers look good to me--hope your liner holds the rest of the season!!

Janet

[Sue225]

After lots of rain and vacuuming to waste then refilling, my CYA is down to 50!!
Last night I vacuumed to waste and cleaned the bottom of the pool, backwashed, then shut the pump off. This AM the pool was crystal clear with nothing at the bottom of pool. After 2 hours of filtering this AM I noticed the brown stuff gathering again. So, I am thinking that the problem is the filter. I am going to add DE this PM or, do you think I should flock?
You people are the best! I don't think in all the years I have owned a pool, my pool has been better balanced and beautiful! Thanks again

[aylad]

You can always add a little DE if you want--just enough to make the pressure rise by 1 ppm--and it may help filter out smaller stuff. Don't forget that the pressure rise takes a few minutes though, so add it slowly.

I don't think adding floc is going to help--it is designed to make smaller particles that won't settle to the bottom stick together so it will settle. Sounds like yours is settling fine, so there's no need for the floc.

Good job getting the CYA down to 50--now just maintain your chlorine in the 3-6 ppm range. Actually, I would keep it on the upper end of that, but it should be easier to maintain your pool now.

Janet

[CarlD]

You can always add a little DE if you want--just enough to make the pressure rise by 1 ppm--and it may help filter out smaller stuff. ...

Janet

Janet means 1 psi, not 1 ppm. (Pound/square inch, not parts per million).

[aylad]

oops, yeah--thanks for catching that for me!!

Janet

[Watermom]

Her brain is probably just tired having to cover PF so much while I am traveling and not around to help as much as usual!

[Sue225]

I added about 1 cup of de to sand filter and it appears to have blown into the pool. Is this normal? Also, the pressure never went up. Should I add more DE?