PLC Controller

[Lampshade]

Do you have a sump?

Yes, i have 10g sump on a 55gal tank.

And yes, it is a Siemens LOGO!, great little things, used them at work for pretty much anything, half the time they're cheaper than buying relays. I like the idea with the air shutoff on the skimmer. I'm sure princess auto would have something that will work well for that, i'll see what kind of contraption i end up with.