54 gallon perc tank

[dunl]

I have a fairly deep bed in my cichlid tank, but they dig it up a lot, sometimes burrowing right to the bottom. Becoming a dirt trap is a concern, so I would probably just go with a low level one on the bottom.

As for the calcium, the 40lb piece of limestone I have in there should help with that as much as it usually helps to buffer my cichlid tanks, I would think?