Come on CHOMPERS it's in a basement, what's the worst that could happen? It floods the basement and he has a much larger pond, no biggie right. 
It could be cut lengthwise down the center (only one cut) if that would make it downstairs, but I wouldn't cut it any other way. It would take alot of bracing (I suggest bands or cables around it with turnbuckles to ajust tension with) to get the integrity back.
I would price out cost of building one in place (do a search for plywood tanks here and in ponds)...and proceed with cautious optimism.
Dr Joe
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It could be cut lengthwise down the center (only one cut) if that would make it downstairs, but I wouldn't cut it any other way. It would take alot of bracing (I suggest bands or cables around it with turnbuckles to ajust tension with) to get the integrity back.
I would price out cost of building one in place (do a search for plywood tanks here and in ponds)...and proceed with cautious optimism.
Dr Joe
.