Sorry for intruding but can I ask a question. Can someone tell me please how much water roughly will travel through PVC 40 pipe by gravity (no pump), if it's vertical (roughly) and only about 6 ft high? In a few different diameters? I've looked on the internet and I can only find tables of friction loss and tables of maximum flow rates. I just want to get an idea for an aquarium system that I'm building. i.e. with 1/2", 1", 1.5", etc.
I appreciate any and all help. Quietreef