OK the Becket is a weird monster that have caused a lot of misconceptions, for it to preform properly you need a minimum of 300 gph from a pressure rated pump by its book. this will be fine for a pond but it is iffy for our purposes.
what I will recommend is a pressure rated pump all the way and forget about mag drives period.
the MAK4 does a totally awesome job of driving beckets, so much in fact that I am building a dual becket skimmer and I am going to see how it will drive two beckets.
I used to have a mag12 driving my skimmer and it was total crap compared to the MAK4. the reason, the mag drive is not pressure rated so any resistance it encounters lowers its output, I am not going to do the formula here but I can say the flow drop in a non pressure rated pump through a Becket is more than 50%. where a pressure rated pump would be way less.
also when you look at cost, a MAK4 is 200.00 and a mag 18 is more.
Steve
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