Anyone feeding their fish or shrimps with the Nutrafin Food? The ones that stick to the wall. Does your fishes and shrimps still eat them?

My fishes and shrimps use to love them now they don't touch them at all.

Everytime I feed them with that...a few days later I see worms on the wall of my tank. Never seen any worms when I fed with food from Tetra. Dont know coincidence or is it due to the food.