Quote Originally Posted by Gruffy
I am on a budget, would this be sufficient
:SystemAir RVK extractor fan capable of moving 175m3/hr

Regards

Well, each 1m^3 is about 27ft^3, 175m^3/hr would be equal to about 4725ft^3/hr, or only about 79cfm. I would say that this fan is not suited to properly exhaust any HID light fixture. Especially when you factor in the ducting like Opie said, the actual airflow would drop to just about nothing.

I know you said you're on a budget but just remember that this fan will cool your light, make the light last longer, make the room cooler, make your plants cooler, and allow you to place your plants closer to the light (more lumens = more yield)... my point is, proper ventilation is key for premium product.
gainesvillegreen Reviewed by gainesvillegreen on . cool tube ? extraction Hey guys n gals .. I am gonna buy a cool tube for my setup .. what fan would i need to sufficiently cool a 400w hps light ? and would the fan be pushing the hot air out of the tube or sucking it ..in other words does the fan go before or after the light .. im having a dumb moment and i reckon its extraction hence why they are called extraction fans lol i just need someone to verify lol regards :) hope someone answers :) Rating: 5