I'm enjoying this forum way to much. I'm spending a lot of time reading post and trying to learn. I have a JBJ 28g Nano Cube - Intermediate. Everything is stock haven't changed anything. Had it up and running since 12/27/15. My test result have been good. Started adding mag as it was low for a few weeks, but that's back up into the right parameters. My question is about the green algae. Is it always good? When is it bad? Here is a pic, my go to guy at my lfs says it's good not to worry. But I'm just wondering.


