I like the Theo heaters and hydro powerheads - my 210 reef has 2x 1,400 gph and 4x 750 gph hydro koralias. I use a mag drive 7 @ 750gph for the skimmer and a 150 gph utility pump for tandem carbon + gfo reactors. Main pump is an external lil' giant - 2800 gph @ 6ft hieght. Lots of flow!