Planted Tank Guru
Join Date: Sep 2011
Location: Willimantic, CT
Another good indication that they aren't finding enough to eat is if they don't stay in one place and forage. If they constantly are swimming around the tank, never staying in one place too long, you might want to feed them.
This always happens when I leave for the weekend. When I come back I notice the shrimp much more active than when I pamper them during the week.