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All Hygrozyme & Humboldt County's Own products 20% off thru end of Jan.
Meters and additives for montoring and controlling the pH of water and soils for maximum growth efficiency.
HM Digital Inc.
HM Digital PH-80 Water Resistant Mtr
TNB Naturals
TNB pH Down
SaferGro Inc.
SaferGro pH Down
TNB pH Up
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