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“General Hydroponics pH Test Indicator, 8oz” has been added to your cart. View cart

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Advanced Nutrients pH-Down, 1L
Original price was: $20.99.Current price is: $14.96.
Original price was: $20.99.Current price is: $14.96. Add to cart Quick View
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Advanced Nutrients pH-Down, 4L
Original price was: $67.89.Current price is: $49.48.
Original price was: $67.89.Current price is: $49.48. Add to cart Quick View
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Advanced Nutrients pH-Up, 1L
Original price was: $20.99.Current price is: $16.45.
Original price was: $20.99.Current price is: $16.45. Add to cart Quick View
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Advanced Nutrients pH-Up, 4L
Original price was: $41.99.Current price is: $31.87.
Original price was: $41.99.Current price is: $31.87. Add to cart Quick View
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General Hydroponics pH Down Liquid, 1 Quart
Original price was: $9.09.Current price is: $4.59.
Original price was: $9.09.Current price is: $4.59. Add to cart Quick View
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in and PPM Control
General Hydroponics pH Test Indicator, 8oz
Original price was: $9.09.Current price is: $5.09.
Original price was: $9.09.Current price is: $5.09. Add to cart Quick View
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in and PPM Control
General Hydroponics pH Test Kit, 1oz
Original price was: $6.29.Current price is: $3.67.
Original price was: $6.29.Current price is: $3.67. Add to cart Quick View
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in and PPM Control
Sku: 400000041285
Hanna HI3895 NPK Soil Chemical Test Kit
Original price was: $20.99.Current price is: $13.49.
Original price was: $20.99.Current price is: $13.49. Add to cart Quick View
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Sku: 400000039732
Hanna HI50036P Quick Calibration Solution, 25 Sachets
Original price was: $31.49.Current price is: $24.15.
Original price was: $31.49.Current price is: $24.15. Add to cart Quick View
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Hanna HI5036-012 Quick Calibration Solution pH/EC, 120mL
Original price was: $8.39.Current price is: $6.07.
Original price was: $8.39.Current price is: $6.07. Add to cart Quick View
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Hanna HI7004-012 pH 4.01 Calibration Buffer, 120mL
Original price was: $8.39.Current price is: $4.75.
Original price was: $8.39.Current price is: $4.75. Add to cart Quick View
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Hanna HI70061G Cleaning Solution Sachets, 20mL
Original price was: $27.29.Current price is: $15.43.
Original price was: $27.29.Current price is: $15.43. Add to cart Quick View
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in and PPM Control
Sku: 400000043838
Hanna HI7007-050 pH 7.01 Calibration Solution, 500mL
Original price was: $20.99.Current price is: $13.68.
Original price was: $20.99.Current price is: $13.68. Add to cart Quick View
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in and PPM Control
Hanna HI7007-12 pH 7.01 Calibration Buffer, 120mL
Original price was: $8.39.Current price is: $6.24.
Original price was: $8.39.Current price is: $6.24. Add to cart Quick View
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Hanna HI7010-012 pH 10.01 Calibration Buffer, 120mL
Original price was: $9.09.Current price is: $6.32.
Original price was: $9.09.Current price is: $6.32. Add to cart Quick View
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Hanna HI7031-023 Conductivity Standard 1413, 230mL
Original price was: $11.55.Current price is: $5.99.
Original price was: $11.55.Current price is: $5.99. Add to cart Quick View