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Gardening Indoors w/ Rockwool

Shipping Weight: 1 lbs
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This book is packed with all new and revised facts and figures on rockwool, the most popular hydroponic growing medium. It also has detailed instructions showing you how to control pH and electrical conductivity and how to set up a rockwool hydroponic garden. Coupled with a few simple techniques, rockwool can produce twice as much as soil. Soft cover 128 pages.
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