i will be picking up a block of "dry ice" for the c02 and put it in a small cooler with a few holes drilled in it so it has a constant supply without a tank and all that confusing stuff lol. i will have a nice size door on it that i cud probably leave open during the light on. but eventualy i want a more permanit source of fresh air as this is my first real grow. last summer i grew a couple random seeds i had and i had to rip all but one out,, blame my mom..... but the one i left was male. it grew big, but not exactly great in thc.. lol. i am also checking out sanniesshop.com i need a reliable source, i cant get any clones locally. i can vent out, but its gunna be a little tricky. how much wud like 20 feet of vent tubiing cost? with some fans for the air?