OK, so now that I've cemented plans on heading in to order the new tank next weekend, it's time for me to think about cabinets, etc.
The cabinet isn't of major concern - have built enough of them now to build things the way I want them so I'm not too concerned about the bottom of it (actually nice and simple, with a narrow section seperated with a side door on it for electrical because I like the layout.
What I am curious about is what sort of evaporation most people get with this sized system? In my case, the room its going in has gas heating on for 8 months of the year which won't help.
Concerns I have right now:
ATO - dunno quite how to integrate one into a sump instead of display tank.
ATO tub - don't think I can fit anything big enough in the bottom of the cabinet if I have a 3ft sump and a section for electrical separated. Was thinking about getting a 60l container or so which will be located at the other end of the room (along the same wall), and running some PVC across from it through the back of the cabinet and into the sump. Use an extension cord to run from the ATO relay over to the pump. Won't have enough space where I want the tank to go to keep an external water container next to it. The water container will actually be located next to where I wanted to put another tank for a different tank.
Really want to have a decent sized tub for ATO given that the room spends 8 months of the year with a gas heater on, so I expect to loose a lot to evaporation (I loose 3-4 litres from my nano a week as it is). I figure with such an increase in surface area I'm likely to loose it at a higher rate. I'd also like to have enough water in there to last a lot longer than a week if I really need to.
ASW tub - I may duplicate the basic ATO setup for ASW. I'm a fan of preparing a few days in advance, and I really like having about twice the amount I need incase things go pair shaped, and the idea of loading one container with water and salt to make it, then eventually move it to another container before getting it into the system for water changes is double handling. If I put a manually controller pump plumbed direct to the sump, I can reduce the double handling and lifting.
Lighting. This is my big one. I've decided I really don't want a bulky hood type thing over this tank, as it's going to obscure some of the view, and be a pain in the ass to move. I also can't hang anything off the roof. The difficult bit is that I don't know what type of lighting I'm going to wind up with initially - eventually it'll be all LED, but obviously that's going to take a while to happen.
Still haven't gotten my head around how to do this....