WP - Outstanding! You are to be congratulated. Thank you!
This makes me want to go grab my soldering iron. I'm gonna go grab my Jemco catalogue and see what kind of enclosures I can find. But first a few questions...
1) I'm I seeing this correctly? That's two sockets, and two socket pairs (two plugs each) that are being controlled?
2) And that also you have not wired the 5th and 6th controlled circuits to the 120V, but to the 24v because your intention is that they are dedicated to your 24v solenoids?
3) Are those relays all different? They look like it. Maybe similar function, just what was in your grab bag at the time?
And I'd like to chime in as a "high tech", heavily controlled kind of guy...
I think this would work just fine, or maybe a pair of them. Being limited to two channels at once isn't such a big deal. You wouldn't want to drain and fill your tank on the same time. That should be sequential. So only one channel used there. And if you were doing fert dosing, well you could do that when you were not draining or filling. So again, only one channel used.
The other channel would control your lights, and depending on timing, that too might be on the same control channel. So did I say you might need two of these? Shucks. Sounds to me like one might do just fine!
Thanks for trying this and sharing it WP. I'm looking forward to seeing where this goes.
Steve - 33g reef and a 180g planted in need of a re-scape.