So I been building a system, it circulates throughout the system through a submersible pump and hosing. In the middle of the hose going from the submersible pump to the chiller I placed a barbed connector circled in red
And up close
I turn the pump off, pull the hose from the connector and place the hose where I want to drain to then turn the pump back on. There is 4 total gallons of water in the system which drains in about 45 seconds this way.
Here it is in action after I just got done putting it together and checking it for leaks but I have not run my air tubing yet, only my circulation tubing.
Air pumps and lines will be installed next.
I can’t preach this guy up enough…
Sierra Tools Battery-Operated Liquid Transfer Pump, Model# JB5684
He is easy and fast and will make fluid changes a breeze.
Hope this helps!