Last night I went to bed and all was fine. Today I woke-up and I their is a lot of hair like white-ish gray algae growing on the aquarium glass!?! The fish (convicts) were all stressed and in a corner (they are fin now). My guess is that my new DIY Co2 (it was making alot o-bubbles) was the cause, or ??? I scraped the algae off the sides of the aquarium and tested the water no ammonia or nitrates. I am aerating and going to do a WC today also. Any thing else I should do???