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Keeping track of your nutrient solution's acid/alkaline balance (pH), electro-conductivity (EC) and total dissolved solids (TDS) is especially vital in the greenhouse or indoor garden. There are several brands of pH/EC/TDS meters & solutions from Bluelab, General Hydroponics and Botanicare that allow you to test, adjust and monitor nutrient solutions for optimal plant health.

Keeping track of your nutrient solution's acid/alkaline balance (pH), electro-conductivity (EC) and total dissolved solids (TDS) is especially vital in the greenhouse or indoor garden. There are several brands of pH/EC/TDS meters & solutions from Bluelab, General Hydroponics and Botanicare that allow you to test, adjust and monitor nutrient solutions for optimal plant health.