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The simplicity of this design allows virtually any skill set
including all of the same features plus these additional sensors & hardware:
No holes in this lid make it idea for storing liquid nutrients
This allows even warming of your entire tray
resulting in greater nutrient uptake for more satisfyingly abundant growth and flowering
Down To Earth Granular Humic Acid EZCL-WH128-LP-1 The simplicity of this designA highly concentrated source of humic acids ideal for use on fields, turf and vegetable gardens. Derived from the ancient remains of decomposed organic plant materials, humic acids enhance nutrient uptake and stimulate soil microbial life. Naturally occurring, unaltered oxidized lignite containing 70% total humic acids, crushed, screened and graded to a particle size of 1 3 mm.