about 9months ago I tore down one of my tanks, which had some apex probes in it. I know they will break if they sit out dry, so i put them in my other system’s sump. They’ve now been sitting there in saltwater for 9 months, and I need them for my new system. Are they still good to use?
There is a ORP probe, ph probe, salinity probe, and temp probe.
There is a ORP probe, ph probe, salinity probe, and temp probe.