I do just about the same thing. I have a 100g inbound sump which has my skimmer and probes in it. Then 2 x 1.5" lines to the outbound sump, which has heaters, reactor effluent, and a Hammerhead return pump. This helps keep micro bubbles down too. My lines between the two sumps are actually mounted close to the floor so inbound bubbles can't make it to the outbound sump.