Hello all, I am having a hard time understanding why the ammonia levels in my system wont come down.  I built the system based on a basic IBC design.  I put a 1-ton fish tank underneath a ~1/2 ton growbed of equal diameter, slightly offset.  I put a bell siphon in the grow bed and a pump in the fish tank and filled it with tap water.  Since it's outside in direct sunlight, I figured the chlorine…