I have a RODC 5500 listed on eBay - about 2.5 x the capability of the 2100 but can be dialed down, via the controller. Total watts is 50 at 1500 gph but 1/2 the heat stays out of the tank since its DC and only the pump is submerged. I've had it for about 3 mos and upgraded to a Ecotech L1 (3100gph)
Sent from my iPhone using Tapatalk