were gone. Fry, because they are so small, are hard sometimes to keep going. That is why people cram as many plants into the tank as they can. Hopefully the fry can forage rotifers from the plants.
Sometimes we clean up a tank so dramatically that we actually stress the fish by suddenly altering the tank. (Have been victim of a couple of jokes - (loud voice from the fish room) "WHAT WAS THAT?")
I have a question for any readers. Do those vacation foods actually do what they are supposed to do? They probably keep some fish entertained. They certainly do look like they would had a lot of mineral to the tank (calcium? bicarbonate? plaster of Paris? what is in them?) Do they actually have enough food, unspoiled, to make a difference?
If one is going away from a tank for a couple of days, probably the best way to deal with it, is to be as faithful as one can with feeding and water changing a week or two before one leaves. Then just leave the tank! If the tank was fine before one left, it should be fine when one returns. (GG and I both have our war stories of fish sitters.)
The one caveat I have about that is that the house's air conditioning or heating system must be left set so that extreme weather will not overhead or chill the tank(s). Before we drove away for the Pacific Northwest three weeks one summer, we did separate some genders where fish might get severely harassed. The weather was very hot while we were gone. No casualties, but a huge electric bill greeted us upon our return.
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