We ALL have things to learn still, that's the beauty of life.

There are a couple things I can think of that could be the problem: 1) Your water changes should be 20% biweekly, however since your tank is still going strong until now I would say that's not the likely answer. However, if you haven't been doing the gravel maintenance there could be dead zones under your gravel, and if anything stirs them up all the toxic ammonia moves into the tank and kills the fish. But if that is a recent water reading, that is unlikely too.

2) The dying fish are old. This is possible unless you got your fish from a breeder, which I don't think you did. If you got the fish from a pet store, you never know how old they are.


All your other fish are still doing well? Was there anything out of the ordinary that you saw in the fish that have died?
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Phishie
Site Coordinator

"An ounce of prevention is worth a pound of cure."

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