03-26-2011, 02:17 PM
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Originally Posted by Christople
Cycling a tank means letting the bacteria grow. f you put the fish in there t would not hurt them. The reason fish die in a cycle is because the nitrate nitrite and ammonia are not produced constantly because there is no bacteria that does so. If you put some of the gravel in from the 30 it would jump start the cycle and you could put some fish. I would put most of them and let the bacteria grow. So if you put enough then you can put fish in right away but if you don't you may have a nitrate spike and need to do a water change and just monitor the toxic components. If you can I would add one fish every other day until all of them are there. Still put all the gravel and every thing and use the 30 filter cartridge. And if you want to use the 30 still just get another cartridge. Keep in mind that the bacteria grows on surfaces not in the water. So taking the cartridge out of the 30 won't harm it because there is enough on the glass. Be sure to get enough fish to keep some bacteria alive in the 30. The more fish the more bacteria because the more food. So if you put the gravel and the filter stuff you will be able to put them in there. This is what I say and what I would do.
Actually the reason fish die in a cycle is because of the spikes in levels of ammonia, nitrites, and nitrates. Those are harmful to fish, they don't die because they are without them.
Taking the cartridge out of the 30 will
harm the cycle because most of the bacteria is in the filter not the glass. Plus the water has to run through the bacteria in the filter to be cleansed of the ammonia and nitrites. So the filter is still necessary. Changes the filter media will completely restart the cycle.
Original poster, I would do what Thoth suggested.