Quote:
Originally Posted by robzilla
with the bare bottom, do you have the flow patterns towards the bottom to pick up the poop? or with enough flow, nothing really stays at the bottom?
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You'll need constant flow streams over the bottom to stop anything from settling, this can be fairly difficult to achieve and requires a lot of flow. It also helps if the rock work is suspended in a way that as little rock is in contact with the base as possible.