Hey all, My buddy was over my house the other day and said it looks like your fish are breathing really fast. I thought it was because they had just eaten... Well 5 days later and still the same. I know that in a planted tank airstones are a no no, but i dropped a small one in last night and noticed today that they are breathing much more slowly and calmer. This is odd to me because there is definatley a difference, but being a planted tank I didn't think there was a need to supply O2, thats the plants job right? FYI I ran out of Co2 a few weeks ago, dont know if that has anything to do with it. Also the fish are still eating and behaving normally I am just wondering could this cause a problem in the long run? Also my plants mainly Rotella Indica, have this weird green slime growing on the upper foliage. Can anyone post any ideas or fixes to these problems? Or just general input as well? Thanks in advance!!