What sort of substrate should be used?
I know a lot of people like to add a lot of things to their gravel. I’m pretty much a traditionalist here and just use plain old aquarium gravel. I prefer dark substrates. I generally like pea size gravel but play around with other sizes too. I have used sand. I don’t really like it as much as gravel. The tank mulm sits on top of it, it flies up when I do water changes, and I just don’t really see an improvement in the plants.
