hi i am about to buy a hps light 400w i will use a tent do i need a carbon filter ???
thebroker Member Feb 8, 2011 #1 hi i am about to buy a hps light 400w i will use a tent do i need a carbon filter ???
webb107 Well-Known Member Feb 8, 2011 #2 Yes when you flower your plants they will smell and a carbon filter will eliminate that smell.
Longtimetoker Member Feb 8, 2011 #3 Here is an excellent link for a DIY carbon filter. Happy Growing! Unofficial Dry-Vac Carbon Filter
