Grodan Gro-Wool Medium Water Absorbent Granulate Rockwool, 3.5 cu ft commercial-greenhouse-fixtures Greenhouse Supplemental Lighting – Pairs

Greenhouse Supplemental Lighting – Pairs with natural sunlight to extend photoperiods or compensate for low-light seasons

Extruded aluminum enclosure

So small your little bro can carry it and your trunk will transport it

Eliminates root circling

Then LIGHT

Grodan Gro-Wool Medium Water Absorbent Granulate Rockwool, 3.5 cu ft commercial-greenhouse-fixtures Greenhouse Supplemental Lighting – PairsGranulated rockwool can be used alone or as an amendment to organic based mixes. For example, the addition of water absorbant 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 or Styrofoam. The granulate is prilled for easy mixing. Granulated rockwool as potting mix: When you use granulated