I am experiencing a problem I haven't had before in all my years of taking care of the pool, so Im hoping someone here can help me out.
Opened Friday. 22,000 gallon vinyl in-ground. DE filter. Pool was extremely green and dirty when I closed. I close very late and last year I stopped running and maintaining it about a month before I closed it. So of course it opened like a swamp. Did the typical things I would do to blue it up quickly...
Got all leaves out. scrubbed. Backwashed every few hours. And kept the FC levels between 12 and 15.
However starting Sunday morning, the pool stopped progressing. It has a green tint to it that I can't seem to get out. I believe this film is on the pool walls and not the water itself because I have a spill over spa and when I fill it with water from the pool, it is spotless.
Sunday night my levels were FC 13, CC .5, PH 7.2, CYA 0
This morning when I woke up my levels were FC 9.5, CC 0, PH 7.2, CYA 0
But there is no improvement at all from last night to today with that greenish tint.
Should I go higher with the shock? Maybe bring it up to 20 for a day? Or perhaps this can be a metal issue?
I've had this pool for over 10 years now and the process up to now has always been very predictable. I SLAM it until it blues up which takes about 3 days until it turns cloudy blue. Ive never seen it get stuck with a green tint before
Thanks a million for any help!
Edit: I forgot to note that the low end of the pool seems to be a lot better than the deep end. I dont notice any tinting or strange coloration of the liner in the low end. Thanks again.