Don't worry friends, I covered the basics in the beggining. I don't have all my pwr bars going to the same circuit. They are split up to 4 different 20 amp circuits. So there is absolutly no problem of tripping it. Electricity is dirt cheap here, so I'm taking advantage. Also Adam, I can see how on paper 100X turnover looks excessive, but you would be very surprised. In the whole tank there is only gentle irregular currents, nothing hard AND believe it or not right now with about 80X turnover I have 2 dead spots. Hence the additional MJ's.