i just did this very same mod to my nano remora today! my LFS sold me the nano for my 29g reef tank, thought i was buying the regular remora rated for 75g, not the nano rated for 25g :P
anyway i figured the nano and the remora are basically the same unit, the remora being 4 inches taller and using the MJ1200 being the only real differences. also, rather than pay the 30 or 40 bucks it is gonna cost for the surface skimming 'attachment', my LFS guy suggested i try a few cents on an elbow fitting and manipulate the actual pump intake in order to get the same effect. so now the pump is hooked to an elbow -> nano remora, and the pump intake is using one of the extended baskets. tip of the basket is pointing up, and the tip is just *barely* over my water line. if i accidentally top off too much it is submerged. very close.... and viola! surface skimming! pump doesn't suck any air, but you might have to play with the position a little bit. it seemed to work well just below the waterline also, provides a nice vortex effect. i have only had it running for most of today but it seems to be working great
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