Hi, I am setting up a budda grow tent (100cmx100cmx200cm) using nft system, only doing 4 plants using 600w. I have an extracor fan and carbon filter, can anyone advise me wether i need to buy another fan for air going in or will a desk fan be enough? I will be growing from seed and would also like to know when they are ready to go in to the tank to start veg how often will i need to feed them? I did 28 plants before and almost every two days the water in the tanks was drunk and i refilled feeding everytime, i believe this was a mistake lol! as the end result had a funky taste even though i flushed them lol! any advice would be much appreciated : )