the gold nugget is the pre-madonna of the pleco's.
very hard to keep, require pretty good water conditions, and a variety of food with lots of cover in the tank.
A 35 gallon hex would not be alot of floor space, they are slow growers, and if you get a smaller nugget with a nice long piece of driftwood I think it could work.
but, they are VERY TERRITORIAL. In that size tank i would not put any other plecos in the tank.
i have a 125 gallon long and my 5-6" nugget (L-018) chases off my 4 other plecs including a 6 1/2" royal. The Nugget thinks he owns the tank.