First I hope this this the right sub forum for my question, if it's not, I'll move it somewhere else.
I drained my pool this August and repaint it. During the time of painting I didn't see any active cracks or leaks in my pool.
Then I put a newly bought hydrostatic valve (bought from Ebay) in the main drain instead of a solid valve cap.
After doing all this I decided it was too late to reopen the pool so I just filled the water to the half way and close the pool.
Today I opened the cover just to check out and find out I lost about more than a foot of water during the past month.
The pool was OK last year.
So I assume I did something wrong this year.
My question is:
What's the possibilities out there?
Is it because I turn some valves incorrectly? I didn't seal the main drain properly? The hydrostatic valve is faulty?
Basically I'm wondering what should I do to begin with?
I really appreciate your opinions, thank you!a