Welcome to the board
I know Ardrossan well,not more than 20-30 from me in the North end of Edmonton.Looking at the canopy,I'd go with VHO.I noticed in the canopy there seems to be a wooden cross beam?You might have to go with two 24" lights,instead of 48".
Maybe next time I'm heading to Ardrossan I'll get ahold of you and stop by,check out the tank