I'm sorry but I could see what the OP was saying without BFM's input. If you have to feed less to "slow the growth" of your fish, then you are obviously planning to keep a fish for as long as possible in a tank which would potentially be too small should the fish grow at its normal rate.OK, I will spell it out. fish addict is assuming that because the Op said that they were upgrading to a larger tank, that the current tank is overstocked. We do not know if this is true, do we ? I am currently upgrading one of my 40 breeders to a larger tank - does this mean that my 40 breeder is over stocked ? Not necessarily. It could well be, but without the OP or myself expressly stating this, it is an assumption. The OP asked about feeding every other day. Stick to the question, do not assume that the tank is over stocked. STICK TO THE QUESTION. Maybe the OP just wants a larger tank. There was NEVER anything mentioned about being over stocked until bfm brought it up. Stick to the question and leave out the insinuations. That's it for me on the subject, I am done. Have a nice day.
Tell me, why else would you want to slow the growth of your fish? Granted the OP mentioned to keep nitrate levels down, but by actually saying that they they can't upgrade to a larger tank and SO they will feed less to slow growth it's quite obvious that soon the fish would and will be too large for the tank. We don't know if the OP will ever get a larger tank, in which case he/she would need to rehome some fish.
If you had 10 tiger barbs in a 100 gallon tank would you feed every other day because you were concerned that they might outgrow it? No. When you have to limit growth, as BFM said, the fish are obviously beginning to get too big.
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