I need the Winston Wolf of pool water here. I've been fighting yellow algae for weeks, or at least I'm assuming that's what it is, it's a yellow/brownish substance that looks like dirt. I've tried everything to get rid of it and I can knock it back for a while but it comes back within a day. I've tried every kind of Yellow out, yellow whatever and none of those specialized chemicals seem to work to completely get rid of it. I brush the pool at least 3 times a day, pump running 24x7, backwash once a day (it's a DE filter) even vacuuming up the bottom directly to waste. Nothing completely gets rid of it, I've also tried SLAMing it multiple times (20 ppm) but it always comes back. A picture is attached, it likes to form around some of the rough plaster patch edges on the bottom of the pool. My ph is around 7.0/7.2, it tends to be lower because of all the chlorine I add, I mostly use the liquid stuff to SLAM it. Alkalinity is around 80, cya around 50, FC around 3ppm unless I'm adding more as required by some of the yellow out chemicals. Is there anything else I can do? Is draining the only option and then I don't know if even that will work.
Thanks
Thanks