The Megatron looks pretty decent and has a number of options. We have one of these, but an OEM setup, no remote tie in yet. Honestly I like the setup of this one better overall. Conductivity probe only goes in one way, flow sensor in clear setup.
Either way protect them both from excessive heat/direct sunlight. We've built covers for all of ours as they tend to die prematurely w/o them.
You monitoring PH to verify the chemical feed is working or you actually controlling off of it as well?
"How it can be considered "Open" is beyond me. Calling it "voyeur-ed" would be more accurate." pka LeroyMac, SkyIsBlue, fka Freddy-B, Mongo, IndyBlue
BIG Government = More Dependents http://threedevilskennel.com/ - not my website.
Versatile Hunting Dog Federation - www.vhdf.org/