I had an established tank running for couple months with very low nitrites nitrates and ammonia. I just added about 50 pounds of live rock after i cured it and now all the levels shot up substantially. The ammonia went up but the nitrite and nitrates went up off the charts. What is the caused of this and how do i lower the levels? I have a 40 gallon tank with a biowheel filter. I took off the biowheel after i put in the live rocks becuase i heard that it its not recommended to have both live rock and the biowheel. Could this be the cause of it?