Block Covers

Block Covers

  • Block Covers 4x4- 40 count

    Hydrofarm

    $12.59
    PLASTIC BLOCK COVERS Reflect light to plant leaves, where it’s needed most. Block light from media. Eliminate algae and mildew growth. 40 dual sided block covers per pack. Works great with GRODAN Blocks. Block light from media Reflect...
    $12.59
  • Coco Caps 6"

    $7.50
    An alternative to plastic covers for Rockwool blocks. Use Coco Caps to help prevent light penetration that may cause algae growth. A natural way to to cover and prevent light 
    $7.50