I have a filter on all the time its a reptile one repto? Crickets every other day free range fed though I start to feel sorry for them after the 4th rescue from the water. Dusted with vitamines every other feeding. The tanks been scrubbed, the test strips say everythings perfect, the filter was changed, and he is eating just fine and active. Thinking that maybe a different set up would be easier on the crickets maybe.