Thread: CT 400 Build
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Old 04/26/2017, 09:01 AM   #29
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Join Date: Jan 2004
Location: San Francisco
Posts: 9,063
Yeah, I can almost guarantee the MP40 pumps will not work. I had 3/4" on an 8' long tank and if you looked at them funny they'd fall off, and this is with no spacer. Granted these were older MP40 pumps (like the ones that came right after they upgraded from the metallic magnets) but I don't think they could have changed the magnet strength that much.

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