Viagrow buffered coir is great for heavy feeding plants or plants requiring high fertilizer levels and aids in the increase of Yield Viagrow Premium Coconut Coir Growing Media is buffered to perfection assuring proper nutrient uptake when adding organic or non-organic fertilizers. Premium, Buffered, renewable media Ideal pH for plant growth Promotes strong root growth and plant vigor No wetting agents required Reduces water frequency without plant stress Able to hold high amounts of water, while maintaining excellent aeration Compressed for easy storage and transportation Instructions for use: To expand Viagrow coco coir block: take coir out of plastic package, soak in about 9 Gal. of water. The block fluffs into approximately 2 cu. ft. or about 18 Gal. of ready to use premium coir. Use as a soil amendment or mix with grow rocks, perlite, vermiculite or your favorite soil or soilless media.