I don't get it. If you have a scrubber, isn't it run in your fuge/sump? If you wanted to use your over flows, you'd have to plumb your ATS into the top of the overflows. But I don't see why you can't just plumb it into the fuge/sump. Lil confused here.
Sorry I'm not good at explaining lol. What I mean is I don't want to run it with a pump. I would like to use the water coming from the overflow to the sump.