Hmm, not sure if I'll get any better results with a Mag 5 than I would with my 600gph eheim 1060 ... the problem is the flow rate drops off considerably when a fair amount of head is added to the system, with bongs such.
I mean ... the water flows fine, just not nearly as fast as I'd like to see it go. Having a 5' bong combined with 1 heavily restrictive waterblocks, a bunch of bends, and two other waterblocks is hell on any pump.
The iwakis though, depending on the model, can handle an insane amount of backpressure.
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