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[Reef_Craze]

why autotopoff.com

[mark]

I'm also using a humidifier float valve (hooked directly to my ro/di unit) but you could try of of these DIY with a salt-bucket of other sealable container. I never did one but principle seems solid.

[midgetwaiter]

I had one I built to run off 12 vdc with 2 floats, hated it. It was probably the switches I used but looking at the sump from across the room seemed to be enough disturbance to get it switching on and off like mad. Nothing I tried as a snail / splash guard made a bit of difference. I got the switches locally but they seemed identical to the ones you see with the cheap kits.

I've got 2 Blueline tsunamis that I like much better.