Encompass All 2 Pack - Return Jet Assembly with Directional Return (Twin Pack) - Fits Eshopps

I want to use this instead of a hang on the back overflow. If i plug the bleed hole will it siphon water down to my sump?

Will this work on a fluval fx4?

What is the diameter of the inside of the pipe

What is the max gallons per hour that can flow through this return jet