I have a QT tank that I set up 2 weeks ago and seeded it with my main tank water as well as 2 spounges from my sump that were about 6 months old. I tested mt water last night and the ammonia card I have in there shows no ammonia. Its a 30 gallon. I have 2 HOB filters with the drop in filters in them. I only have 4 small fish - clown, damsel, 2 inch regal tang, and dottieback. My PH is 8.0 and Im syphoning each day some of the water out of the tank as I feed them every other day but put a clip of nori in for the regal each day. I have done 1 water change per say about a week ago. My nitrites show to be .1-.2...what can I do to knock this out? What level of nitrites should I worry about? I dont show any ammonia so how is it I have nitrites showing up? Also my nitrates show less than 10..