there is vent at the elbowlooks good
hope you planned siphon breaks on those two drains going all the way down to the tank floor.
150 gallon rubbermaid stock tank.. with 5" trimmedyou planning on some sort of stock tank to use for the sump?
the 2 pipes (far left and right) act like a vacuum... siphon all the poop from the bottom... and going into filter socks.. in the sump.Question: Why'd you go with two two long pipes going down to the botom of the tank instead of drilling the bottom, or even bottom edge?
I'm considering drilling a 180, and just seeing people thoughts.