I had just set up my 55 gal after a couple of years of no fish and I got a one chance shot at gettting some baby RBs. I had to act or loose the cance. I got 4 fish 1-2 inches long and put in a 3 inch pleco. They have been in the tank for 2 wks now and seem to be thriving. I got a minimal ammonia spike a week ago and now it is back down to zero. The nitrites are now up and are at 2-5ppm. How concerned should I be? Is there anything to be done but wait it out and hope? Thanks