8in Rockwool Block Cover
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 light to plant leaves where it's needed most
  • Eliminate algae and mildew growth
  • 40 dual-sided block covers per pack

Write a review

Please login or register to review

8in Rockwool Block Cover

  • Brand: Hydrofarm
  • Product Code: HGCOV8
  • Availability: In Stock
  • $25.95
  • $21.28
Mother Earth Super Tea Bloom Organic-OIM 23L..
$362.48 $297.23

Get more ballast for your buck with the SG ballast, which is light on price but heavy on features. E..
$129.95 $97.46

Mike O'Rizey is a beneficial soil organism inoculant. It contains a diverse blend of mycorrhizal fun..
$6.99 $4.68

The Silver Sun DE by Sun System is a large traditional multi-leaf parabolic hood design that deliver..
$159.95 $119.96

Roots Organics B2 Professional Grade Container Media can act as a direct planting media or be used a..
$29.95 $24.56

These durable white lids are designed specifically to fit net pots...
$1.64 $1.34

CaMg+ is the ideal supplement to provide a natural source of Calcium and Magnesium, critical element..
$8,490.18 $5,688.42

USHIO introduces the NEW Double-Ended 1000W Super High Pressure Sodium Double Ended Pro-Plus lamp to..
$159.95 $119.96

Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block..
$89.45 $73.35