So my algae is normally a bit excessive. i get a lot of green algae so before i go to bed i turn over the sand and scrub the tank. by the same time the next night, it's back so i do it again. I went away for a week and my dad took care of the tank. he called me telling me how bad my algae was but i assumed it was the usual. The day i was coming home my dad cleaned the tank at 9am so it would be clean when i got home. i got back at around 5pm and the tank looked like it does in the pictures! you can't really tell from the pictures but the sheets of algae are like 1/2 and inch thick! i don't even know what to do!