all over mine too .
so what lol , cover it up w/ coo coo pufffs once bigger n it'll die off , mine always do .
peace
xcrispi Reviewed by xcrispi on . My rockwool has a green spot! Common sence would tell me its algae but why is it just on one cube? On the other hand its under light, is it algae? And do I need to get rid if this? I attached a pic... Thx guys and gals, I know your overworked and underpaid, but I sure appreciate it. Rating: 5