Humidifier Float Valve

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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.