Yeah... I saw those also Ken, but when I called the guy, he said those were used for a detergent containing phosphate. I was not thrilled about plastic that could absorb phosphate....
I thought about a liner to safe guard, but for the same price I'd go with food grade guy here...
also, those had a solid stock metal wire cage around them, most were rusting pretty badly from sitting outside. From the looks of the craigs list ad, these have a tube stock that looks like stainless or a polished steel / galv. that is still in good shape. I would still prime it prior to use if you buy, but would prefer the one in better condition - sure you'll agree.
Custom, once you cut it down, it'll fit through the door. I wouldn't cut it down any more that you had to to get the job done. Wasn't that what Siropa was using in his pond?
plainrt. I have this friend who spends alot of money buying only supplies meant for reef tanks and is never innovative. Everything has to look "cool and clean".
I will be buying most of his stuff when he gets out of the hobby because he cannot afford it.
besides.. in my basement, I'd frame around it anyway and cover it with ply on the outside and you would not know the dif.