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Derived from: calcium nitrate
optimal illumination with the Active Eye loupe
This electrode has a triple ceramic junction in the outer reference cell and the conic pH sensing tip is made with low temperature glass
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Center drain available for an additional $500
ThinkGrow UV Light Bar for Model-H/W PRUNING Derived from: calcium nitrateThe ThinkGrow UV Light Bar for Model H W adds a portion of the spectrum to completely mimic natural sunlight. Adding UV light increases terpene production, which improves the smell and flavor of herbs. One UV 1 bar produces 70 watts of full spectrum light plus 10 watts of supplemental UV light. It is recommended to substitute two UV light bars for a 4'x4 or 5'x5 coverage area in the last 4 weeks of the flowering cycle. Part # UV 1 Compatible Models:
