Stinky water from dead mouse
Okay, so I bought a 40g breeder tank a few years ago and stashed it in the garage to use at a later date. The other day I finally got around to using it so I could combine a few of my small tanks into one. There was a dead mouse in the tank, been there a while. It was a skeleton and other.. grossness. I scrubbed the crap out of the tank with white vinegar and rinsed repeatedly with hot water thinking that was more than enough.
Tank has been set up a couple days now, using my filters/hardscape/substrate from one of my other tanks and last night I discovered the tank smells like a dead animal, not overbearing, but I can smell it coming from the filter. I have shrimp and snails in the tank and they seem to be doing fine. Berried females haven't dropped eggs and I haven't seen any dead shrimp. Haven't seen sheds either though. I've done tests and ammonia tests come up negative. Might be a tiny bit of nitrates, there's a lot of plants and already cycled double sponge and HOB filter.
Do you guys think this smell is something that I have to worry about? I want to believe that it will fade after a few water changes, one which I've done already, but I'm still worried. I need to get my fish in here, but afraid to. I'm running carbon right now and I'm thinking maybe I'd try some purigen over the weekend. What do you think? Will the smell just turn to ammonia/nitrates? Could it hurt my fish? Thanks.