If you do go with DWC do you have a way to keep your water under 70F? One of the most important considerations are water temp control in DWC. The tent sellers don't tell you this they just advertise their wares as a "hydro setup" cause they know if they gave you full disclosure you wouldn't buy the tent cause a chiller costs over $250. Hydro is great and it can be fantastic for yields and quite easy if you are disciplined about your grow practices but it isn't low cost to set up. Tents are very affordable right now but to really do hydro in a tent you need good lighting and a chiller. If you run the tent at a decent air temperature for optimum growth the water will get too warm and bacteria will destroy the root system. Some people use beneficial bacteria to fight this effect but it is often a losing battle to grow with water over 70F. If you use a chiller with DWC then it pretty much requires a recirculating deep water system which also costs more unless you are into DIY.
I have a thread for a low cost RDWC undercurrent system but it requires a fair amount of labor and a chiller. Overall the best way to convert to DWC is study like crazy, create a plan, budget out the cost and then execute the build. If you don't do all that you'll get frustrated with underestimating the real cost and trouble.
I ran DWC single bucket systems for a year or so without a chiller and I had to run the piss out of my air conditioner to keep the room around 72F so the water wouldn't exceed 70F and then the growth of the plants is slowed and they never produce what they could at a higher air temp.
200 watts of LED is pretty low for a 3X3 at 22 watts to the square foot. 40-45 watts to the square is more appropriate.
Dee
