Hi; I have a 55 gal freshwater community tank with Anubis and Amazon Sword plants. The Anubis are doing great with new shoots and new leaves even a "flower" on the top of the plant! However the same cannot be said for the Amazon sword plants. They do not grow and the tips seem to disinergrate. I currently have two CO2 injector systems and put in liquid plant fertilizer weekly. (leaf zone) I have also replaced my overhead light within the last month or so with a good light for plant growth. I have talked to several fish stores and they asked if I have plecos; I have two of them. They said that they like to suck the cloraphyl from the leaves. However the Anubis plants are are doing fine like I said before. I also do weekly water changes with a special filter from Aquaruim Pharm. that filters out all the crap out of tap water. I do a 10 gal change once a week. pH seems to be fine around 6.8 to 7 more or less. No nitrates,no amoninia. The fish are doing fine with no deaths for a long time(over 1 year). Any hints or tips would be appreciated. Are there any plants I could use in place of the Amazon swords that are tough like the ANUBIS? Thanx