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Monotub Adhesive Filter Disks (6-Pack)

Availability: In Stock
Usually ships In 1 Day
Item #: FD4
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5.00 stars, based on 31 31 review(s). | Write a review
Retail: $7.99
$1.49
Price: $6.50
You Save: $1.49 (18.6%)

    (NEW!) Take the guess work out of the air exchange equation with our new Polyfil filter disks. Constructed from a durable 2.25" plastic ring and 3M adhesive back, these disks have the perfect flow rate and density to allow the right amount of air exchange for monotubs or any bulk casing style grow. They keep humidity in and allow for the high levels of air exchange needed for any tub or greenhouse. Simply peel and stick over any size hole up to 2.0" diameter. Can also be re-used!

    Features & Includes:

    • 6 Polyfil filter disks
    • 2.25" diameter disk
    • Covers holes up to 2.0" diameter
    • Installs in seconds to any plastic container or Greenhouse!
    • Custom manufactured to our specs!
    • Filters and regulates air exchange
    • Reusable!

    Customers Also Bought (check to add to cart)

    (NEW! Version 2.0) Take the guess work out of the air exchange equation with our newly designed Polyfil filter disks. Constructed from a durable plastic ring and 3M adhesive back, these disks have the perfect flow rate and density to allow the right amount of air exchange for monotubs or any bulk casing style grow. They keep humidity in and allow for the high levels of air exchange needed for any tub or greenhouse. Simply peel and stick over any size hole up to 2.0" diameter. Can also be re-used!

    Features & Includes:

      • 6 Polyfil filter disks
      • 2.25" diameter disk
      • Covers holes up to 2.0" diameter
      • Installs in seconds to any plastic container or Greenhouse!
      • Custom manufactured to our specs!
      • Filters and regulates air exchange
      • Reusable!

    Clean & Reuse over and over with 3% Peroxide! 

      Overall Customer Rating of 31 Reviews:
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      Bellingham, WA

      FILTER DISK

      Rating:
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      Pros:
      Cons:
      What a difference, should have gotten these weeks ago. They are nice and large, giving my mushies more air. Filtered air, and they stuck on very easily. What a class act I have now.

      Florida

      Excellent.

      Rating:
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      Pros:
      Cons:
      Exactly what I needed.

      fantastic quality

      Rating:
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      Pros:
      Cons:
      I had a bit of a mishap that resulted in needing replacements for the filter disks on the tub I bought from Midwest. I tried to find cheaper DIY alternatives on Amazon but I couldn't find anything near the quality or ease of use. Polyfil is all well and good but now that I've used these I'll never go back. They're a bit pricey but they're long lasting and reusable as long as you're careful with them.

      OR

      Awesome service and products

      Rating:
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      Pros:
      • Price quality
      Cons:
      • None
      Midwest has been invaluable in getting my home mycolab up and running. These disks are already working on my monotub to bring in filtered air.

      Great product

      Rating:
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      Pros:
      Cons:
      Great value and fast shipping..