Can I put a power head here:

[WhatCouldGoWrong71]

I need to send one of my Stream3’s out to FOH to get guards 3d printed. I have MP60s and 40s that I could sub in while one of the streams is out of service. Due to my plumbing, I am only able to get it in one place (first I’m going to have to put the dry side in a a series of vacuum sealed bags) where my floating weir is. What’s the downside to put it above the purple pipe where the floating weir starts?

 

[Reefing Madness]

 

[get-salty]

Hey im curious, looks like all of your output nozzles are submerged ? If so, arent you afraid of back siphoning ?

 

[WhatCouldGoWrong71]

Hey im curious, looks like all of your output nozzles are submerged ? If so, arent you afraid of back siphoning ?

2 are on a closed loop in the pic and I have 2 large reverse check valves using the hinged flappers for the other two circuits.