funkdr.
Member
Man, that wall fan is inefficient. If you need a fan I'll sell you one for dirt cheap. I have a 3 or 4 inline fans between 240 and 440 CFM. I've used cool tubes and if you pull that cold air at a good rate through, you will get at the most a 3 degree Fahrenheit difference on the top of the plant and the ambient air. Even with a 450W bulb 3 inches from the canopy. Which means more effective lumans for the plant. I have to slow my fan down a little bit sometimes because I'll start to end up with light bleaching on the plants. I think it's more effective, but there are many different ways to skin a pig. I just do what works for me. I just started reading the thread so I may have to come back and edit this.