beckzilla
Member
I have a 110 gallon reef tank and have (2) 400 watt MH Ushios 10,000K and was talking to my local reef tank dealer and he recommended going to HQI and dropping to 250 watt and 20,000K for power savings and better light for corals and clams. Need opinions on switching and also on the main difference between ARO and PHO ballasts besides price.