I'm getting a 5ft tank that so far will have 2 oscars, 2 severums and a pleco. I will get an ornate polypterus before too long. What would be the best substrate for them? I like the look of the red stuff I have seen in a few photos, would that be suitable? and where can I get some?
Also what would be other suitable tankmates/are the current ones ok? Tank is 540L will have a 3ft, 130L sump and pump will do about 4500 Lph, so filtration will be decent