Hey, over the years I’ve seen a lot of people confused about the options with pushing or pulling air through filters/scrubbers.
Last night I had to switch things around in my 2 x 4 tent because the plants got too tall so I figured I’d show with pictures how I buy myself an extra foot or so of height when I need it.
So this is how I prefer to keep it if the plants are not too tall. With the filter inside the tent above the light, and the pre-filter on the outside of the cannister because the fan is pulling air through it. But I’m not comfortable with the light being so close to the filter, that’s why I switched it last night.
So now that I’m going to be pushing air through instead of pulling it, I put the pre-filter on the inside of the cannister.
Since I’ve been through this many times, I already have hooks in my ceiling where I hang the filter and connect it to the muffler outside the tent. Also, I try to locate the duct opening in the tent as close to the grow light driver as possible.