Hi, thank you so much in advance! A couple days ago i noticed some green blotches on my aquarium wall, and decided to clean it off in my next water change (that will be this weekend). But just 30 minutes ago i noticed the algae migrated to the other side too? I never had a problem with algae before... i have a 39g tank(i think, give or take a gallon) and i have noticed for a while a teeny weeny little peice of green moss it seemed growing on the rocks. Recently my fish got bloated, he is better now, but i switched foods. Could that be whats causinf this? The algae seems to be a different kind than is growing on the rocks and is like a couple spots of light green... does anyone have a guess at what it might be?