Originally Posted by Kurt_Nelson
Still don't think the tank ever cycled. But it doesn't seem like you're wanting to consider that possibility. If you never saw ammonia, but did see nitrite (and continue to see it today), then something is wrong with a test kit somewhere. You don't get one without the other. Fish gasping for breath, losing color... sure sounds like ammonia poisoning to me.
no i believe that too. its just that i test the water alot, today too again. the ammonia test is almost white/with a little green on the beginning and turns into something between zero and 0.25. now after 4 hours its still the same.
i added a few small fish to the tank and i acclimated them a little more than 2 hours adding small amounts of water of the tank in the bag. until now they look perfectly ok and swim curious around.