I recently bought base rock from a going out of business fish shop. the rock came from already set up tanks, I than had everything to start my new tank, I rinsed the rocks off with warm water than I set everything up added water and began the cycle process. HERE IS THE PROBLEM.... my water looks brown It was cloudy when I Initially started everything but the water has cleared up.(I added some bio-magnet, stress coat and Acurel F, 16 Drops for a 48 gal. tank)but now it's brown could it be the rocks or the chems? I have not added the Ammonia yet, but can someone give me some pointers.