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	General Hydroponics Calibration pH 4.01 Calibration Solution -- Quart General Hydroponicsâ„¢ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponicsâ„¢ technicians check each batch to ensure that our... Only $17.75
	General Hydroponics Calibration pH 7.01 Calibration Solution -- 1 Quart General Hydroponicsâ„¢ uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponicsâ„¢ technicians check each batch to ensure that our... Only $17.11
	General Hydroponics pH Control Kit Contains Ph Up (add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level), Ph Down (uses food grade Phosphoric acid to lower the pH to the proper level), and Ph Test Indicator (fill a test-tube halfway with... Only $14.83
	General Hydroponics pH Up Liquid -- Gallon The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. To maximize plant growth, the pH of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5.... Only $18.50
	General Hydroponics pH Up 2.2 lbs Dry The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. To maximize plant growth, the pH of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5.... Only $11.94
	General Hydroponics pH Down Liquid -- Gallon The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. To maximize plant growth, the pH of your nutrients should be slightly acidic. Experienced growers consider the ideal pH for most crops to fall between 5.5 and 6.5.... Only $22.15
	Subculture B -- 75 g SubCulture-B is a probiotic inoculum of beneficial microorganisms that will increase the vitality and yield in all plants. Whether in soil or hydroponics, our proprietary blend of bacteria and trichoderma fungi colonize the root zone and media to form... Only $19.96
	SubCulture M - 75 g SubCulture®-M, Mycorhizae Root Inoculant contains a wide diversity of endo and ecto mycorrhizal fungi that colonize plant roots. These beneficial fungi form a fine network of fibrous strands that serve as an extension of the plants root system; increasing... Only $11.67
	Subculture B - 150 g SubCulture-B is a probiotic inoculum of beneficial microorganisms that will increase the vitality and yield in all plants. Whether in soil or hydroponics, our proprietary blend of bacteria and trichoderma fungi colonize the root zone and media to form... Only $33.61