i tried to read different threads trying to figure out the real deal on co2. on my last cycle i used a co2 boost bucket and to my discovery today breaking down the flowering room the pump that sticks in the top of the bucket was full of mold.resulting in problems for about a third of my plants.at least i know why .now im looking for alternitives.and with reading a bunch of threads, im now very confused.if i have an intake and an outake running all the time(wich i was already doing with the co2 and after seeing some pics on this site of what happens when you have too much co2 and some of my leaves matched,the tiny little yellow specles) some say i dont need any, i have about a 4 by 4 flowering space and i run a 600w hid if it matters. ive got the cloning and veg down with no issues what so ever and i hate to see time, money and hard work go to waste like this during the most important time thank god im not doing this commercialy or i probably would have killed myself today.anyone have a similar setup.i would like to avoid those wild electronic atmosphere controls but if thats whats up then ill have to do it.