hi guys, my plants are growing fast and beautifully healthy after they survived a strong stress in the seedling stage, now they 1,5 foot and i am thinking to buy a co2 system. My doubts are in the setting, i have a tent 8x4x6 and since here is very hot i have as intake fan an air conditioner 12kbtu, as out take fans i have a 440cfm and a 330cfm for the cool tubes(2x600w hps), both with carbon filters, if u wonder why i have 2 fans it is cos with the a/c as intake is quite powerful and the long tubes i use for the outtake fans before reach the balcony, only one fan wasnt enough and the tent was looking as a balloon, so i use 2. my question is this, buying a tank with gauge and setting it with a timer, u think it will be possible to enrich enough co2 in the tent even if there is plenty of ventilation? i cant stop the air condition otherwise the temp reach 35-37c, and with a/c i reach 27c day and 21c night. any ideas if this is possible to reach 1500 ppm without stop all the fans? the co2 system is an aquarium system that cost me 100usd for the tank and 120usd for the double gauge system complete. worth?