Plumbing Nightmare

[clarence]

I personally would not be too concerned. As someone else has said the operating pressure is very low. I have a setup with a mag 12 return on 3/4 inch pipe. I wrap the pipe ends with teflon tape and press them together. I don't use glue in case I want to make changes. I have used this type of plumbing on my pond outside for years with no problems. My tank has been up and running for almost a year. My setup is in the basement and there is a floor drain under the tank. I would use glue if I was in rental or condo unit and did not have the drain in the floor. Clarence