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-3 Handheld TDS Meter with Case β 0-9990 ppm, Β±2%
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Β½4.6 / 5
~$18Buy now on Amazon (opens in new tab)About this product
The TDS-3 adds a protective carrying case and tighter Β±2% accuracy over the budget TDS-EZ β worth the upgrade if the meter travels between multiple grow sites.
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nutrientsGeneral Hydroponics Flora Series 3-Part Nutrient System (1 qt each)β
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4.8~$35Buy Now on AmazonSee full details
ph meterApera Instruments PC60 pH/EC/TDS/Temp Meterβ
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4.9~$100Buy Now on AmazonSee full detailsSee full comparison
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