6in 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

6in Rockwool Block Cover

  • Brand: Hydrofarm
  • Product Code: HGCOV6
  • Availability: In Stock
  • $21.95
  • $18.00
Our complete line of fittings is known for its superior performance and reliability. These non-corro..
$0.90 $0.74

Hydro Flow single grip hose clamps provide a superior seal on hose or tubing. As interlocking teeth ..
$0.82 $0.67

Libbey® glass jars are made to preserve the contents, resist scratching, corrosion and are BPA free...
$17.95 $14.72

These Grommets by C.A.P. can be used to replace old, worn grommets in your hydroponic systems and ar..
$12.95 $10.62

Precision Perlite Coarse is cut with a ten mesh screen leaving all material to retain #4. Perlite ..
$38.95 $31.94

The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such a..
$62.95 $51.62

HPS (high pressure sodium) Grow lights have good spectral distribution. High Pressure Sodium Grow Li..
$71.95 $53.96

KoolBloom is a highly concentrated nutrient supplement that promotes abundant flowering and facilita..
$29.40 $19.70

Features a high quality aluminum body. Traditional electric heating element for reliable and consist..
$131.95 $108.20