Hey you guys I can end this really quickly because........it's my thread
I don't have an RODI unit and won't any time soon. Reason is not enough room in my house to be able to have the equipment I would need to bring my well water down to a useable TDS (1500 - 2000ppm TDS) so I will be running auto top off out of a garbage can or other vessel. This way you can also control the amount of water that is in your vessel and should not have a flood although you can burn up a pump
I don't need a chamber for the protein skimmer as I will be running a BK 500ext. on it. I want to have a refugium, a place to house my return pump, heaters, zeovit reactor (if I decide to use zeo on this tank) and misc. other pieces of equipment that I might aquire.