Already? They've only been in the tank 3 hours. Is that enough time to tell if its really cycled?great stuff.. that could mean that your tank is at least cycled for the first part. if you measure 0 nitrite too then you're fully cycled
Edit: To be fair I have been using the Stress Zyme+ stuff that is advertised to help with the cycle. I also have a bio-wheel filter (idk if that matters).