Rockwool Block Covers, 4", Pack of 40
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