75 community stocked good but not over. 1 Emperor 400, 1 AC110 and a lone sponge filter. after many problem with noise and after many impellers, my emp still sounds like a frieght train making love with a tornado. So would you run 2x AC110s with a sponge or get another 400 and run the combo. I mean is there any pluses with the 400 compared to the 110
AC 500 (110) is the way to go. Have been running them with nothing but success for years. "T"
