If youre going to build a turtle table, it should be a LOT bigger than a 120 gallon. If that doesnt fit throught the door, how do expect to build the whole table? Not sure where you live, but if its a good area, outdoors all the way.
Acrylic, interior latex semi-gloss...something like that. I personally think wood looks better stained and sealed though, for which you would use an interior water-based sealant.
If youre going to build a turtle table, it should be a LOT bigger than a 120 gallon. If that doesnt fit throught the door, how do expect to build the whole table? Not sure where you live, but if its a good area, outdoors all the way.