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  • Seed Trays
  • 1020 Blackout Humidity Dome


    Blackout Humidity Dome

    Those Extra-Strength Humidity Domes you love are now available for blackout application. These blackout domes for 1020 trays help regulate your seedlings' growing conditions and help cut down on watering. Maximize germination while providing your seedlings with the proper blackout period with our heavy-duty blackout domes.

    Not sure how to use a blackout dome? Read Microgreens and When to Use a Blackout Dome.


    • Made from Extra Strength recycled plastic
    • Dome reaches 6" above the top of the seed tray (5½" interior space). Outer Dimension: 21¼" x 11" x 6"
    • Available with 2.5" dome and 6" dome height
    • Adjustable Humidity Vent
    • Not intended for use in direct sunlight
    • Easy-grip handle attached to cloning dome.
    • Provides tray with blackout period with a snug fit
    • Fits 1020 trays and plug trays, including all those sold by Bootstrap Farmer

    Free shipping on orders over $49 to Contiguous US

    Shipping Policy

    Most products will ship from our facility in 1 to 2 business days after the order is placed.  Express shipments placed after 12PM EST will be shipped out next business day. Full details can be found on our Shipping Policy Page

    Returns Policy

    Returns can be made on most products within 30 days of purchase. After 30 days we unable to offer a refund or exchange. Certain products are non-returnable. For full details visit our Returns Policy


    Ask a Question
    • What's the function of a blackout dome? Why does this product exist, I'm curious the role it plays in starting seeds.

      Its primarly used for things like microgreens that need a light deprivation period to germinate well.  Some microgreen require it for the entire growing period.