Blog entries by smokinjoe50

I also am using C02 which is below my exaust fan and was wondering since C02 is lighter than oxygen will it drop when I have exaust fan on, I have a half moon pipe between them hoping that it will only such out the rising hot air...thanks

Please help,I just started and was needing to know how close should I have my lights to the plants.I have 2- 600 HPS lights in a 700 Sq ft room and currently have them about 2 ft away,is that adequate?thank you..............p.s the leaves are also a bit yellow