i dont know those volksgardens, but would that be inside another room? IF people set up in the basement compared to the attic, they are going to have different temps regardless of the lights they use. Plus if you live in Canada, or Hawaii, big difference in temps unles you have a very controlled room with heater and AC unit. So room set up means everything when it comes to temps. I know from making mistakes. My temps are like 55 at night because of being in a garage type room. Too low, but i cant get a heater going in there atm.well i dont actually have one, but if i did it would be in an average size room, in one of those volksgardens dont know whether u have seen them, im pretty sure you can put them in a cool tube