Ok thanks for the advice. The guy at the pet shop said I might be losing the very bacteria I need to grow by doing the water changes so regularly and suggested cutting down on doing it. I just dont want to harm the fish I already have. He also told me not to clean my filter and suggested a bottle of something or other that helps reduce ammonia and nitrite.
Is he making any sense? How long does it normally take for the nitrgen cycle to get established?
LFS cycling advice!
"Buy product X!"
The water changes do not remove the bacteria you are trying to cultivate, they cling to surfaces... Yanks explained it correctly - you will remove the ammonia/nitrite, which the bacteria need to grow, but also are poisonous to the fish. Better to extend the cycle slightly, than to kill the fish.
As far as Prime (a quality dechlorinator, which you need to use during the water change) goes - it doesn't REMOVE the ammonia, it temporarily detoxifies it. It is a great product to use during a fish-in cycle as it will only temporarily detoxify (not "kill") the ammonia or nitrite. This wears off eventually, and then is available to the bacteria.
Doing water changes is the BEST option to keep your fish healthy during the cycle. As far as how long it will take.... that's tricky to predict. But the fact that your nitrites are up means you are about halfway done. Don't buy any product like Ammo-lock, etc. that will actually make the ammonia unavailable to the bacteria.
Good luck.
I would disagree regarding how many "yes" and "no" votes come up in threads about can you keep this fish with this other fish. There is a very strong consensus in most threads that I've read - and consensus regarding the way to conduct cycles, whether fishless or fish-in.