Planted Tank Guru
Join Date: Nov 2009
Location: Missouri united states
I never touch my substrate (dirt capped with black diamond).
The snail's and shrimp eat bit's of food that the fish miss and that which they eat,they excrete back onto the substrate where it is food for plant's.
When the snail's and shrimp can't keep up with their clean up duties,it is a sign for me,that I'm feeding too much.
Another indicator is how dirty the filter material get's between monthly cleaning of the foam pad's.
Normally,I feed my tank's three times a week, and only feed more if I have baby fishes I'm trying to grow out.