Oh ok. That's good.I've not seen the avast pressure switch I'll have to check that out. The osmolator nano is for the QT tank. The display is going to be run with 3 float switches through the Apex
Not to knock the Tunze, just trusting one float switch is kind of scary for a display tank.
Yea I would check out the avast pressure switch. Supposed to be better then a float switch, there's no moving parts. Wasn't very expensive, and hooks right up to an apex break out box. Email them if you have any questions, they are good about responding.