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General Hydroponics pH Down Pro is the premium solution for maintaining and lowering a nutrient’s pH level. 1 Gallon Bottle.
OUT OF STOCK General Hydroponics pH Test Indicator makes pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. 8 oz bottle.
Out of stock
General Hydroponics pH Test Kit makes pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. 1 oz bottle.
General Hydroponics pH Up Pro is the premium solution for maintaining and raising a nutrient’s pH level. 1 Gallon Bottle.
HydroMaster Digital tester makes monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH/EC/TDS/Temp monitor with a rechargeable battery. Portable, wall mount or benchtop use. Tests pH at
The HM pH/Temp Hydro Tester is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Measures pH and temperature. The HM EC/TDS Hydro Tester is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Measures electrical conductivity (EC), total For optimal performance, re-calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges with the HM Calibration Solution. HM Digital’s pH buffer solution comes in powder form, so it’s lightweight, takes up very little space, is inexpensive and has an indefinite shelf life. For use with HM Digital’s PH-200 and PH-80 (as well as other brands of pH meters). Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The HM EC/TDS Hydro Tester is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more. Measures electrical conductivity (EC), total TNB Naturals granular pH DOWN is non-caustic so it won’t burn your hands and since it’s so gentle, it won’t harm the beneficial bacteria. It’s even safe for use with aquaponics.
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HM EC/TDS Hydro Tester
$52.99
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HM NaCl Calibration Solution
$8.99
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HM pH Buffer Solution
$13.79
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HM pH/ORP Electrode Storage Solution
$9.99
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HM TDS EZ Meter
$26.99
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TNB Naturals Granular pH Down
$19.99 – $399.99
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