@TheFairyBudMother, I use carbon filters because I'm a very clean person and I like my whole house to smell like whatever I have in my wax burners. I currently use 4 inch Ipower filters with their ducting and fan counterparts. They get the job done for sure. Also, if you are pulling air from outside your house the are a great and keeping pests out. I have a scentsy burner in the room outside the closet that the tents are in. All you can smell is coffee from the wax melt. The key is getting a filter with good charcoal in it. Australian is the best so I hear. I'm considering slamming a third Vipar in there but i'd probably need to update the air intake system to manage all that heat so I'll most likely keep things as is + or - a few T5 bars.If you are seeking to invest in a filter I suggest you wait until you want to spend 100$+ on a whole system of ducting and fans to go with it. My air system probably ran about 200$ but thats because my system of two filters is running air for two tents (Which works perfectly but the way). I'll post pictures of it tonight when I post the first day of week two for this grow.
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