For good hydroponic cultivation, the strength and pH of the nutrient solution must be just correct. Because of this, a pH metre and nutrient strength metre are essential tools to have on hand while putting together a nutrient solution. Very popular among growers are Bluelab metres. They don’t miss a beat as long as they are properly cared for and maintained.

Blue Lab PH Pen

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The Bluelab pH Pen is a hand-held…
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