Gravity is really the only way to go if they're going to be searate tanks instead of a cobo
sump/fuge. Dont even consider complicated schemes using pumps and siphons, as something somewhere will fail, and you'll be totaly screwed. I don't recall the size of yur
sump, but if you can get someone to drill the 10 for you and set it on top of your
sump, you're golden. Then, you can just direct some of the overflow water into the 10, through the
fuge, then out the drilled hole(s) and into the
sump.
