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The media's expansion is due to the presence of two to six percent combined water in the crude perlite rock
Sea Kelp adds minerals from the sea
This lamp is for experienced growers who demand the highest quality plant production during ALL phases of plant growth
• Fully heat-treated
Teaming With Nutrients by Jeff Lowenfels air-purification Controller compatible (SOLD SEPARATELY)About Teaming with Nutrients Just as he demystified the soil food web in his groundbreaking book Teaming with Microbes, in this new work Jeff Lowenfels explains the basics of plant nutrition from an organic gardener's perspective. Most gardeners realize that plants need to be fed but know little or nothing about the nature of the nutrients and the mechanisms involved. In his trademark down to earth style, Lowenfels explains the role of both
