On Mar 25, 11:10*am, (L u) wrote:
I feel I need to wash off fish waste and uneaten food. But then again,
in rinsing the plastic plants and little rock cave, I also feel I might
be removing the good bacteria.
Ok, you're the expert. So I won't do it anymore.

Evisdenbtly if your feeding that myuch there is food remains onthe
ornaments etc you need to b ack off on feeding. As for fish waste, you
really should not be getting that much waste deposite don plants etc,
and water current usually will remove it formornaments and pull it
into the filter unit. Doubt a undergravel filter will do this very
effectively.........