[quote=“Gotasplinter, post:16, topic:8819”]
so I gotta ask, I’m a simple person when it comes to all the gadgets but is this the exact piece your talking about? https://www.amazon.com/Neptune-Systems-AquaController-Display-Probe/dp/B005H1A2BE/ref=sr_1_1?ie=UTF8&qid=1476735658&sr=8-1&keywords=apex+jr[/quote]
Yes that is the Apex Jr. I was talking about, I bought mine before they started selling them with the display being part of the price and only paid $99.00 for mine.
Then added a PM1, PM2, VDM and a diy breakout box over a period of a couple years.
The most important add ons IME are the breakout box as it allows many virtual switches with alarms controlling ATO level in both sump and storage tank, leak detection and many other options if so inclined, then PM2 as it ties in with my ATO so that if the salinity gets too high or low it sends alarm and turns off ATO till I can check it.