Stone's 225 Carbonate Factory

[Reef Pilot]

Not sure if you have an Apex, but if you do, you can use it to have your skimmer come on 5 min after your return pump following a power outage. Also similar to your float switch relay, you can use the Apex with a water sensor to shut down your skimmer when it overflows. I use this DIY sensor with my Apex (which can recognize an off/on switch event) to shut off pumps. It could be taped to the outside of your skimmer cup. Or use your float switch inside with the Apex (no relay needed). Just some alternatives...