Description
Rockwool is excellent for absorbing nutrient solution in hydroponic setups while letting through adequate oxygen for plant growth.
- Suitable for: Starting seeds, cloning plants and for root cuttings
- Biodegradable: No
- Composition: Spinning molten basaltic rock into fine fibers
- Treatment: Requires PH treatment before you can use it for starting seedlings
- Dimensions: 36x36x40mm (Fits into Gro-Blocks)
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