I have a 11,000, in ground, vinyl, kidney shaped-pool and a cartridge filter (not sand). The guys that closed my pool last year did not drain much water and after the (new) guys opened it this year I have been having trouble keeping the water clear.
I did actually clear it up earlier this year (just running the filter and keeping the levels in check) and we swam in it, but, I noticed (while swimming) that there was this *gritty* feeling to the walls. I also noticed that everything I netted off of the bottom was WHITE. Which was weird and kind of gross. The leaves, worms, everything was white. Weird. Anyway, since I was swimming in the pool I swam around and just took my hand and sort of wiped down all the walls. While doing this the water was becoming cloudy. That was 2 weeks ago. I have tried everything I can think of to get this water clean.
I tried Floc, Clarifier, Heavy duty clarifier and running my filter non-stop for 2 weeks. No improvement.
I took a water sample in to the pool store and the guy said all my levels were perfect aside from chlorine and there was no calcium! I have been shocking the pool, 3 gallons yesterday, 1 today and still no improvement. I can't even see the bottom steps of my ladder.
When I rinse out the filter, this white milky substance comes off. And on the ground where I rinsed it, I noticed it collects into wavy clumps. The filter is working but not well enough. Oh, and yesterday I took the top off of my filter and there was this white/grey sludge stuck to the top of it where it was obviously collecting from the pool.
I don't think it's calcium because I tested for that and even though it tested negative I added some chemicals to treat calcium anyway. I don't think it's white mold because it isn't collecting as 'paper sheets' in the pool.
As I said before I Floc'd the pool and waited 24 hours and it did nothing.
I'm really stumped. I have a new cartridge on the way for my filter. If that doesn't work I'm going to fill in the pool and plant a garden.
Here are pictures of the steps in the pool, the water test I just did and the chemicals I've tried. Please help, it's 80 degrees today and we want to swim!
Picture of 3 steps, you can see how cloudy the pool is here:
My latest water test (the test strip is on the far left)
The 4 things I've tried to get this problem cleared up
Any help will be greatly appreciated,