04-18-2012, 10:15 PM
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ahh NH3 is ammonia.. keep thinking it's nitrates.
Ok so nothing is changing..
Bacteria wont die off that easily, they can adjust to a wide range of temperatures including sudden changes. I'm sure theres a limit of what they can handle but unless one tank was super cold I dont think thats the problem. As to food, they can hibernate basically and last for months with no source of food. That shouldn't be the issue either.
So I would guess either the ammonia was too high and killed them off, possible but dont think so, or it was a bit of everything.. stress basically. Prime, bacteria supplement, ammonia.. too much stuff to handle is my guess.