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Grodan Rockwool Granulate Repellent 13.4 cu. ft. bag - Granulated repellent rockwool can be used alone or as an amendment to organic based mixes. Example; The addition of water absorbent granulate to peat mixes at 25-50% volume increases water holding capacity and aeration, improving plant growth and shelf life. The water repellent granulates are superior substitutes for aerators such as perlite and Styrofoam
- 13.4 cu. ft. bag
- Can be used alone or as a mix with organic based grow mediums
- Mix with absorbent rockwool if more moisture retention is required
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