Like Chris mentioned, I had an ORA one (and I forgot to say something at MACNA to them) and it eventually died. He was not the only pod eater in my tank as I have a Hector Goby, pipefish, a scooter blenny and a wrasse. I try to dump 1/2 to 1 bottle of tigger pods monthly into my 20 gallon. I can tell when my pod population dies down because my pipefish will be much more active. My tank also likes Ova and bloodworms and my picky eaters will eat some of the two as well.