I have had a very difficult time clearing my pool all the way back to last Fall. IT started out as a bad Algae bloom which I cleared before winter. When spring came I fought for numerous weeks and even posted on this forum about having a difficult time clearing the haze in my pool. After numerous shocks, clarifiers, flocc treatments etc the haze is gone.
I got to a point now where the water is clear but the bottom has this green film to it. Almost two weeks ago I had everything settle to the bottom, I vaccumed to waste and minus a little floating around from the vaccum it was all clear.
Two weeks later I have the same film back again all over the bottom of pool. I did use a Clarifier (HTH) to help try and grab any of the stuff floating around. It goes in blue and dont think it could be that on the bottom but I am unsure.
Normally I would think if I had Algae It would be all through the pool and my CC would be high. I can clearly see the main drain on the 8' deep end but the pool looks green from a distance (bottom coming through). I can easily push my broom over it and you can get a lot of detail with the blue pool liner.
I am pretty sure I have something not quite filtering correctly and probably some bypass with my filter (Well I am "assuming"). When I try to vacuum this stuff and its not going to waste you can see it come right back in through the returns.
My reason for posting is I really wanted to know what this mystery green film is. I have shocked numerous times and to no avail. Chlorine holds fine overnight. Current test numbers:
CC <0.5 (barely turned pink)
Any clues on what this is, and what to do would be greatly appreciated (am I on track with the filter?). I took it to a 18FC shock last weekend, so any cooties should be gone and held no lower than 3.0 FC the last week.