I thought I had cleared up my mustard algae last week with "yellow treat" from united chemical company and liquid chorine, but I only used 3 gallons of liquid chlorine and then it rained another 5 inches and ended up pumping water out of my pool. Currently my pool is sparkling clear, pool looks great, but cannot maintain any chlorine.
Pool tests as of today:
No obvious signs of mustard algae that I can see, but something is gobbling up my chlorine. CYA is high because I placed several 3in chlorine tablets in skimmers to try and get chlorine in pool!
My plan is to lower the CYA and then hit the water with "yellow treat" and really superchlorinate according to your chart. Anything else that I am overlooking? This is my 7th summer with this pool and about 35th around a pool (my parents) and I have never had this kind of trouble before.