Thanks! You guys are awesome. I'm planning on sticking your RFGs on my returns.This is a cool build - the hydrotube pumps on the closed loops are of particular interest to me. What are they rated for in terms of raw throughput and
Also - what size are the inlets coming of your closed loops? They look to be 1.25 or 1.5in PVC
These are the hydrotube 42s. They are rated for 3000 gph each and are plumbed using 2 inch pipe. Panta rhei offers a few larger sizes including the 63 (12,000 gph) and the 75 (40,000 gph )