I turned my old 29g into a planted tank (not sure what to put in it yet--currently has my two RCS and some zebra danios). I left it alone for about 2 weeks (aside from feeding) and noticed wiiitle tiny plants growing out of the substrate! IMO it looks AMAZING!! They look to be Downoi so theyre going to stay small. My question is, how can I clean up the gravel if there are plants growing in it!? The danios don't make much of a mess but given a few months, the gravel will most likely look like a septic tank. I do plan on making this into a full on invert/shrimp tank, their bioload is is low but they do poop we all poop Will the plants take care of leftover "stuff" at the bottom or is there a better non-abusive way of cleaning the gravel without disturbing the downia? From the looks of it, the downia will soon take over the floor of the tank... Misc info: I NEVER use any copper products in this tank (due to this tank possibly becoming a full invert tank, not to mention the two RCS already in it). I check and double and triple check any fertalizers or plant food I add.