Sunleaves Brand DuraPump SDA540. I looked in the catalog and they make a couple larger ones too.

Too funny on the girlfriend
I pruned the bushes on the back side of my cabin to fit 2 275 ibc's behind them. I'll be able to open my bedroom window and feed

I see alot of people with these siphon setups....where they draw from one tank into another into another into another filter someplace in the loop...and back to the main tank. What would be the best setup for this? Say I want to put 3 IBC's together off one large bio filter...