Hello! This is my first post, so I'm still trying to get the hang of things. I would like to make a Low Tech planted tank out of a 30 gallon hexagon tank. I would like to stick to the Amazon/South American biotype, and I would like to know what kind of plants and fish I could get that fit this description. I already have a large-ish amazon sword, and some smaller ones (I have no idea what they are) two small angelfish, and some guppies. I already have some nice sand as the substrate, but would like to add some pebbles and large river rocks. Does anyone have any ideas of what kind of fish, plants, substrate, etc. that I could get for this tank? Or maybe how I could arrange things?