***** canister filter for 75 (soon to be planted discus)
various fertilizers(I'm new at this even if you could recomend what to get and where to get it)
need a 48" light for a 75gallon planted I think it needs to be 150w at least
If the black sand is for the discus tank, I would rethink it. Unless you get all albinos, any with pigeon blood in them will show lots of peppering against the black. And take a trip to Aprils, she gets some nice discus in.
I am just getting started with plants myself, but I just have them planted into the sand. No other substrate. I am dosing with metricide and will be getting EI dosing going soon. From what I have been told that will be enough