ph adjusterGeneral Hydroponics pH Control Kit (pH Up, pH Down, Test Indicator)β
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4.7~$22Buy Now on AmazonSee full details
tds-meter
HM Digital TDS-EZ Water Quality TDS Tester β 0-9990 ppm, Β±3%
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Β½4.6 / 5
~$14Buy now on Amazon (opens in new tab)About this product
The pocket-sized TDS pen that lives next to every nutrient reservoir β takes a reading in seconds and costs less than a bag of nutrients.
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nutrientsGeneral Hydroponics Flora Series 3-Part Nutrient System (1 qt each)β
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ph meterApera Instruments PC60 pH/EC/TDS/Temp Meterβ
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