Did the slotted acrylic (with a router but probably a table saw would work) as wasn't sure where I wanted the level. Piece is inside the tank, no pressure on it so the silicone holds it okay.
Was planning on placing a reservoir in the joist space above the sump and gravity feed (even bought a 20g poly tank that ended up being just a little too big so returned) but then the issue was I'd need to remember to fill it up every 10 days or put on a ATO (maybe using a humidifier valve
). This works, no wires to short, switches to jam, solenoids to fail open. Have come across on RC where people have flooded their tanks but never seen with a simple 10 buck valve, but with $500 controllers.
As for the membrane, wondering if TDS creep another little misinfo. First membrane lasted around 2 years, more than that on this one. I will notice after many many months a increase in TDS, but change the DI and back to zero.