Common sump, how to pump water??

[Boomboy]

seems like to much hassle for the keeping it seperate, if they were side by side it would be a different story, way easier and could have bigger sump too( run the whole length of both tanks. but i would do this considering the hassle , and not much benefit to it other than one sump, which doesnt really seem like a bonus if you think about it, because one sump means one system, which means one tank goes down so does the other( as in toxins or anything that you might get)