My experience with a 2x1.5" overflows is I can only get about 500g each on my current tank and keep them quite. I don't have an over flow box now and these 180s from J&L have the hole drilled too far from the corners to make boxes without loosing too much room.
So I'm thinking if I have 2 pumps with about 500g each @ head, I would be ok. I didn't know they made a MAK5, I like my MAK4 and noise will not be a problem since the pumps will be in the garage.
I have been thinking about real big pumps (hot tubs and such), but not sure if that would be overkill.
Marc if your not in a hury, I plan to visit Van some time in the next month. That might be the cheap option.
Lee
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Need more time for the tank... Break a leg!
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