Planning for the next tank - lack of room in a tank that does not offer room to aqua-scape (100aga 72"l x16"x22")
I am a fan of the closed loop. No PH's in the tank and only one pump to do this chore. But who can afford a motorized
ball valve with an actuator - easy $300. Dr. Michaelson first came up with the idea of using PVC and a 1 rpm motor to turn a shaft, with holes drilled 90' from each other. So as it turns, one "port" is open and the other is closed. And it just turns 360' 24/7. I had my good friend Dave- in Corvallis machine the shaft for me and I got it back yesterday.
So I have one part of the puzzle for the next upgrade - in-wall 300gal ply-wood tank.
Water intake for the valve is on the bottom. And the exit is on top. Makes sense
