I ordered a profilux controller yesterday. I was really on the fence between the 4e and 4. The 4e is more affordable and comes with the controller unit, ph probe, temperature probe and a power bar. That covers really everything that you’d need. The 4 costs more and has all the same equipment included with the 4e plus a conductivity and redox
I was thinking it through it through and decided if I’m going to spend the money I should just get the two extra probes. Conductivity and redox may be good as an insurance plan on the tank.
Conductivity probe for salinity-
I’m not planning on replacing the sump or auto top off, and the auto top off that comes with the reefer tank relies on a float switch. These can fail, so this is where the conductivity probe comes in. It can notify me if the salinity isn’t in the right range for whatever reason and I can make the necessary adjustments.
Redox probe -
For redox... it’s something that I never have thought about before, so that will be interesting to monitor. Im not going to chase a number with redox - I’ll just use it as data and look at trends over time. Could this help prevent “old tank syndrome”?
I’ll also be using the controller to run a reverse schedule chaeto reactor eventually. My phosphate and nitrate are too low to get it running now so when the time comes I’ll add the reactor and that should help with ph swings at night too.