I'm preparing my tank for cuttlefish eggs so I have a 20 gallon that I just split into two with acrylic and silicone. I plan on keeping shrimp alive on one side and cuttlefish eggs in a breeder net on the other. My idea was to have two flexible overflow tubes - one going from main to the cuttlefish egg side, and another tube going from the shrimp back into the sump. From what I've gotten from others this is very dangerous if the siphon would break? I attached a picture of how its going to be setup unless you guys suggest I hang something inside of the sump. Edit: What I just thought about was adding two overflow boxes on the display and nursery and raising the nursery as much as I can. Is that my best option?