I have a new IBC system, setup with a bell siphon. It floods and drains about every 20 minutes. My water pump was large enough that I added on two 8 foot sections of down spout and put pots in them every 8". I have the excess water flow through them constantly. The system is about 3 months old and currently has clear water and a nice film on the inside of the tank. About 150 gallons of tank and…