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- 6" Rockwool Block Cover, pack of 40
- Home
- Growing Supplies & Accessories
- Grow Mediums
- 6" Rockwool Block Cover, pack of 40
6" Rockwool Block Cover, pack of 40
Product Description
- 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
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