best type of float switch?

[freelancing]

I've set up a sump & refugium in my garage, but even though I've got a Mag5 in the garage as the return pump and a Mag5 in my overflow in the tank that goes to the refugium, my tank fills up faster than it empties.:confused:

While I haven't gotten this figured out yet, I'm confident I will fix it soon.:cool:

With that in mind, I'd like to get some sort of float-switch cut off thingie that will automatically cut off the appropriate pumps when water level gets to high... so that if a pump suddenly fails while I'm at work, I don't end up with either a flooded living room or worse... fish with no water!:eek:

I know nothing about float switches... I don't think I've ever seen one and I don't know what to look for... if they're as diverse as pumps and skimmers or very simple devices someone could make with a paper clip and a gum wrapper... I am totally clueless.:confused:

Are there any recommended brands? A price range that's good to stick in?

Thanks in advance,
ShellEy
shelley@freelancing.com

[seaspook]

in my opinion, jeff at life reef makes the best float switch, only problem is you usually have to wait 4 months to get one

alan