First test after refilling pool

randytsuch

LifeTime Supporter
Mar 29, 2008
256
Los Angeles, Ca
A couple of weeks ago, I decided to empty and clean my pool. It's fiberglass, so I high pressure washed it when it was empty.

I also just got a tfp test kit and a magnetic stirrer, and took my first test today this morning.
date 11-Apr
fc ppm 1
cc ppm 0.5
tc 1.5
ph 7.2
ta 90
ch 80
cya 0
temp 84

fc was better yesterday, but the kids were in the pool all afternoon, and the cover was off. I added some Cl after taking this test.

I am not worried about ch since its a fiberglass pool, and I expect the ch to slowly rise.

I put in a little CYA on Thurs, but obviously not enough yet. I also know you are supposed to wait a week until the CYA test, but I did not put very much in yet. I have a sock with a few lbs of stabilizer in the skimmer right now.

BTW, the magnetic stirrer is very cool, makes it easy to run these tests.

Randy
 

randytsuch

LifeTime Supporter
Mar 29, 2008
256
Los Angeles, Ca
New numbers from this morning
I measured the spa too. CYA might be a little below 20, tube was full, and I could see a very faint outline of the dot.

pool
date 20-Apr
fc ppm 1.5
cc ppm 0.5
tc 2
ph 7.3
ta 90
ch 80
cya 20
temp 73

spa
date 20-Apr
fc ppm 5.5
cc ppm 0.5
tc 6
ph 7.6
ta 80
ch 90
cya 30
temp 70
 

Ke

Well-known member
Sep 29, 2007
106
Toronto
I thought with a fiberglass pool you should not empty the water, as ground pressure may cause it to cave in, or hydrostatic pressure may cause it to pop up?