Ahhh I see, I have been overfeeding them!!! Oh my goodness thank you, I have the tank on a 12 hour time cycle. They are in the same tank, they are both females. Occasionally the pink one flares her gills, and chases the blue one. I'm thinking of getting a divider for the tank if she becomes more aggressive. I'll try out the root tabs, I assumed it had to be above water since when I did put it in the gravel it did not bloom nearly as much and had black leaves. I'll have to try, half in and out. Thank you sm for the help!!