arowanaman420
Aquarium Advice Apprentice
My dad has a 33 long with a golden headed sleeper, lawnmower blenny, clown goby, wheeler's goby some corals, hermits, snails etc. He woke up this morning to find 3 fish and a sally lightfoot dead. The corals, featherduster, hemits and snails are all fine. Also, the pistol shrimp and goby pair survived, but all other fish died. He did a 5g water change last night, the water was mixed 24hrs with the same salt as always. I can't imagine any kind of drastic parameter change from this. My first thought was heater failure, but the temp is still OK. Stray current? But why would the inverts and goby live? I'm baffled so I thought I'd put it to the pros. TIA.