Quick question, I used 1.25" to make my own overflow. My pump pumps out the water quicker than it can overflow. Is it possible I still have air in the system?
In order to start the syphon, I set it up on top of the aquarium, so the intake was under water, had the wife cover the bottom end that goes into the sump, and I sucked on the top end until her hand got wet. From there, it flowed ok, looked kinda slow.
Should I stick an air line to the check valve and suck while it's under syphon to make sure all the air is out?