RO/DI and Saltwater tanks are in place. Each hold 200 gallons (30"DiaX72"tall) I've started roughing out the plumbing and the Waveline DC12000 should get here Monday along with a few missing plumbing components.
I'm estimating ~7 GPD evaporation. I'll rig a latching float system with the Apex which will automatically fill the RO/DI tank. Other than monitoring and periodically changing RO/DI filters, resin and membranes, The ATO system should require very little maintenance.
The plan for the AWC is to use a Masterflex pump driving 2 peristaltic pumps to replace about 4 GPD. This should yield a ~40% monthly water change and require refilling the saltwater tank every 6~7 weeks.
I am having some second thoughts on the tank dimensions. I initially decided on limiting the tank height to 22" so I could reach the substrate with the tank sitting on a 36" tall stand. I'm now thinking that perhaps I should just go with the 320 and gain the additional 4" of height.
Decisions, decisions...