Not sure... I am breaking in a new set up and they are part of the first run through. I have had some problems with the HVAC and light leaks in the flower room so I have been hesitant to move anything over. I have the HVAC issue resolved but still have a light leak that I think I can get fixed today. My flower room is completely empty right now and I have lots of room under my lights so if they get a little big it's okay, if they get huge then I have another problem. So we shall see...jhezz how big you think they'll get?