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Filter your monotub air holes.

  • 1 overfilled quart bag
  • Covers 2-3 standard tubs
  • Lets air in, slows contaminants
  • Pack tighter or looser to tune airflow
Price: $5.00
    Points to Purchase:500

    Item #: PF1
    Availability: In Stock
    Usually ships In 1 Day

    Polyfil is the simple way to filter the air holes in a monotub or fruiting chamber. A loose plug in each hole lets fresh air in while slowing spores and dust on their way to your substrate. One overfilled quart bag covers 2-3 standard tubs.

    • 1 qtOverfilled bag
    • 2-3Tubs per bag
    • SyntheticPolyfil fiber

    Why growers use polyfil

    Breathable

    Air moves through while airborne contaminants are slowed down.

    Adjustable

    Pack it tighter or looser to tune airflow.

    Any tub

    Works in any bulk casing setup or DIY fruiting chamber.

    How to use it

    1Drill holes

    Make air holes where you want air exchange.

    2Pull a tuft

    Tear off a piece a little larger than the hole.

    3Stuff each hole

    Push it in so it fills the hole snugly.

    4Tune and replace

    Loosen for more air, tighten for less, and use fresh polyfil each grow.

    Tip: too dense chokes off air and too loose lets contaminants in. Aim for a snug plug you can still see light through.

    Specifications

    SpecDetail
    MaterialPolyfil synthetic fiber
    Amount1 quart bag, overfilled
    Coverage2-3 standard tubs or containers

    Prefer peel-and-stick?Adhesive monotub filter disks give every hole the same airflow with nothing to stuff.

    Common questions

    How much does one bag cover?

    About 2-3 standard monotubs or containers.

    Can I reuse it?

    Use fresh polyfil for each grow.

    Overall Customer Rating of 3 Reviews:
    review-star review-star review-star review-star review-star
    FL

    Great for FAE!

    Rating:
    review-star review-star review-star review-star review-star
    Pros:
    • Cheap but good quality
    • fast shipping
    Cons:
    Great for FAE during fruiting stage!

    Great company

    Rating:
    review-star review-star review-star review-star review-star
    Pros:
    Cons:
    Received on time And there products are the best on the market

    WI

    Nice to buy everything in one place

    Rating:
    review-star review-star review-star review-star review-star
    Pros:
    • Convenient
    • Works great
    Cons:
    • None
    I buy this from Midwest Grow Kits because I'm lazy and don't want to go to a separate store for it. I'm sure it's cheaper elsewhere but, it's not expensive here and like I said, I like the convenience.

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