Ok, My 10 gal tank has been running with fish, for about 3 weeks. Nitrate, and nitrite are still 0. however, my 30 gal, which has been running with fish, for about 2 weeks, readings are ammonia .50, nitrite .50, and nitrate 5. Why is this??? Well, I'm kinda excited, because I thought that I would never get bacteria in there...lol. My 30 gal ran empty for a few days longer than my 10 gal did, does that have something to do with it??? I put a little bit of the water from the 30 gal in the 10 gal (about 2 oz) dont know if that will do anything...