I bought a lawnmower blenny and started the QT process on Saturday to learn the ins and outs before getting most expensive fish for my new, larger aquarium. I think he ate the first day and I tested 0 ammonia last night but when I got up this morning it had passed away. The only thing I can think is the air stone wasn't on high enough, I had turned it down a bit (not on in pic). Am I over looking something else? HOB filter had some sponge media from my main aquarium. Temps looked okay. Here's my setup.