I don't think the tabs are going to help. You need to shock the pool and tabs aren't going to give you that shock. Can you shock it as soon as you get home in the evening and then again right before you go to bed at night and then again in the morning? Then, on the weekend, really hammer it with bleach as often as you can. Someone may have a better idea, but that is my suggestion. Algaecide isn't really going to do anything for you at this point. Keep your pump running 24/7. Hang in there.