Decided to have a local pool guy come out to open the pool this year because I haven't had much time and he only charged 100$. He said I had a real bad algae problem and that he had never seen algae that would adhere to the pool. The algae was sticking in certain areas but I had been killing it by keeping the pool at shock level since Monday . He vacuumed what he could, then before I knew it he dumped in two bottles of swimmers advantage copper algaecide. He then said he will come back in a few days and we will see how it looks. I don't generally use algaecide because I follow the principles of this website. He dumped that in last night and this morning I have some foaming in areas of my pool. The recommended dose is 8 oz. , he dumped in 64oz. Is this a big deal? What should I do? I guess I learned my lesson with having someone else come out to work on he pool.