I've looked around and I'm still not too sure what to do about it! In the past, mulm seemed to build up in my gravel and I always left it because I thought it would be fine for my plants. But is it really okay to keep that filth in there? My fish never seemed to do too well in my tanks with plants but without, with vacuum cleaning they seemed to do better, so I'm suspicious of the mulm! I sucked out so much when I cleaned up my fish tank.
Anyways, I plan to have this tank planted again, and I'm just wondering what people do about mulm?! I would like to get rid of it, but the plants will be in the way. I feel like the plants... Crypts and such, grow so slowly that they can't eat it up quick enough. So, plants aren't using it very fast and are in the way, so I think it's gonna just pollute my tank.