PS234 Test Results

[bxb21]

I received my test kit about two weeks ago and these are the first test results that I feel confident I've done correctly.

FC - 10
CC - 0
TC - 10
PH - 7.5
TA - 140
CAL - 230
CYA - between 90-100
TEMP - 81

I have about a 23,000 gallon gunite pool and my questions are:

1. Is it alright to leave my TA at 140 since I have my ph where I want it?

2. I'm trying to keep my FC between 8 PPM and 15 PPM since my CYA is so high, but until I received my test kit I had no way of knowing what it was. About a month ago I started to get algae so it must have been below 8 PPM, it was certainly higher than the 3 PPM which was the highest level on my old test kit. Using the bleach calculator I raised it to what should have been 30 PPM and tried to maintain it for about 1 week. Since then I haven't seen any sign of algae, but I lose 3-4 PPM in a 24 hour period. Is this normal or am I still having some algae issues? I am using bleach to chlorinate my pool now in an attempt to eventually bring my CYA down. It also seems to keep my ph from dropping which has been an issue in the past.

Thanks

[Watermom]

Alk is OK at 140.

Are you losing any cl overnight? If not, then you are probably just seeing what is normal for your pool. If you are losing much overnight, then you are probably still fighting something.

[bxb21]

It dropped from 9 PPM to 7 PPM overnight. I guess this means I still have an algae problem? Is it suppossed to not drop at all overnight? Should I raise the level back up to 30 PPM or should I wait till I see some evidence of algae?

Thanks

[duraleigh]

You've done a nice job understanding the parameters involved and getting them in line. I'd say you're on the border as to whether you have any algae issues. A 2ppm drop could be from stuff blown into the pool or maybe from a little algae. My guess is your safe to just stay at maintenance level.

Watermom's suggestion to test your loss overnite is probably the best way to tell......I seem to lose about 1ppm overnite. I'd test again maybe a couple more nights and see if your loss is consistent. As long as your water stays clear and you don't test more than .5 for CC's, I see no reason to shock.