Thanks.... looks like a cool product. Technology has come a long way for our hobby, but I'm still very old school.... it's neat, but I'd have a hard time trusting it. That's something that I'd either have the pump in a bucket that I kept filled with a certain amount of water so in case of an open failure, it could only empty the contents of the bucket into the sump & no more, or if it was tied to a larger water supply, I'd probably drill a hole & have it run through a float valve.....
Wanna calculate the cost of that new reef tank?? Take your worst nightmare, double it, and you're halfway there.