This is our fourth year with Baquacil. Year one was perfect. Year two we had slight problems at the end of the season. Last year, year three, perfect water for a month then green water for two months. This year the water was perfect the first month. Now the water is slightly cloudy and there is a bright yellow to light yellow slimey substance in the filter (cartridge), housing, baskets, skimmer and on the hanging thermometers in the pool. I do not see any on the bottom or at the water line. Our dealer said switch from Baquacil to Bacquacil Ultra. So I put that in today. If it doesn't clear up soon I am converting to chlorine! In the meanwhile, what could the yellow slimey stuff be? Fungus? Algae? Baquagunk? What is Baquagunk anyway??

Also, what does BBB stand for? Please pardon a newbie's questions!