Ok, I plan on running a 3x3 flood and drain table using the sea of green method. Will be getting a grow tent to make everything enclosed and keep light/odors manageable. I plan to run a 600 watt HPS over the 3x3 table. All plants will be grown at once, harvested, then a new batch of cuttings put in. I plan to do maybe 1 week or no veg time to keep them small and crank out in a quicker time. I will keep moms of the 2-3 strains I am growing at all times and clone them when needed. My question is that I am thinking about using a cool tube on the 600 watt. I already have my inline fan which is decently powerful. I think around 250-300 cfm. Can I leave one end of the cool tube open and suck air through for ventilation as well as keep the light cool? Also, where will my carbon scrubber and fan go in the setup. Obviously the air goes through the cool tube first, but then should it be ducting to the fan to the carbon scrubber or what? Basically want to know the order they should go in for the best ventilation. I will be simply ventilating into the attic and it should be possible to put the fan up there if thats the route I need to go. I was also wondering how big a mom area I would need. The Jardin tent I want doesn't seem like it will be big enough for the 3x3 and have room for moms and clones. Hydrohut has a almost 5x5 floorspace tent which I am looking at. Thanks in advance for the help.