4,000+ results for hydroponics ph
- General Hydroponics pH Down Liquid, 1-GallonOpens in a new window or tabBrand New$29.24hydro_store (4,430) 98.8%Free shipping977 sold
- General Hydroponics pH Down Liquid, 1-QuartOpens in a new window or tabBrand New$16.40hydro_store (4,430) 98.8%Free shipping954 sold
- General Hydroponics pH Up Liquid, 1-GallonOpens in a new window or tabBrand New$29.24hydro_store (4,430) 98.8%Free shipping597 sold
- General Hydroponics pH Up Liquid, 1 QuartOpens in a new window or tabBrand New$16.39hydro_store (4,430) 98.8%Free shipping576 sold
- Hydroponics pH Control Kit with pH Up and pH Down Solutions & pH IndicatorOpens in a new window or tabBrand New$16.90 to $29.90Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- GH General Hydroponics pH Up and pH Down 1 Quart Combo Kit Water Adjuster BufferOpens in a new window or tabBrand New$26.49Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns1,191 sold
- General Hydroponics pH Test Indicator Kit 1 oz. Wide Spectrum Super-ConcentratedOpens in a new window or tabBrand New$10.97walimart (745) 98.5%Free shippingFree returns
- General Hydroponics pH Test Indicator 8 oz Ounces - up down wide spectrumOpens in a new window or tabBrand New$15.89Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns686 sold
Picked For You
Sponsored | Top selling items from highly rated sellers with free shipping- General Hydroponics PH UP, PH DOWN 8oz 1 QT Quart Base Control Adjuster Acid GHOpens in a new window or tabBrand New$12.45 to $29.50valleyhydroponics (18,866) 98.6%Free shipping326+ sold
- General Hydroponics pH Down 1 Gallon -buffer gh adjuster hydroponicOpens in a new window or tabBrand New$29.23Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns740 sold
- General Hydroponics pH Test Indicator 8 oz Ounces - up down wide spectrumOpens in a new window or tabBrand New$15.99Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns494 sold
- General Hydroponics Ph Down Only 10 fl ozOpens in a new window or tabBrand New$11.99Save up to 20% when you buy moresolefinest (19) 72.1%Free shipping
- General Hydroponics GH pH Test Indicator Control Kit 1 fl oz (30mL) ConcentrateOpens in a new window or tabBrand New60 product ratings - General Hydroponics GH pH Test Indicator Control Kit 1 fl oz (30mL) Concentrate$10.94nutes (6,415) 98.7%Free shippingAlmost gone22 sold
- 4 in 1 Digital PH EC Meter LCD Tester Pocket Hydroponics Aquarium Water Test PenOpens in a new window or tabBrand New$18.98Save up to 10% when you buy moreList price: $28.98 35% offTop Rated Pluseeekitonline (451,499) 99.1%Free shippingFree returns290 sold
- General Hydroponics FloraNova Bloom, 1-QuartOpens in a new window or tabBrand New$29.96hydro_store (4,430) 98.8%Free shipping59 sold
- GH General Hydroponics pH Up and pH Down 1 Quart Combo Kit Water Adjuster BufferOpens in a new window or tabBrand New$43.95Save up to 8% when you buy morefabsab50 (55) 93.7%Free shippingFree returns
- General Hydroponics pH Test Indicator Kit 1 oz. Wide Spectrum Super-ConcentratedOpens in a new window or tabBrand New$13.7315% off 3+ with couponTop Rated PlusFree shippingmarysonlinedeals (96,245) 99.6%Free returns109 sold
- General Hydroponics pH Up 1 Gallon -buffer gh adjuster hydroponicOpens in a new window or tabBrand New$29.24Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns646 sold
- General Hydroponics pH Down 8 oz Ounces - down wide spectrum upOpens in a new window or tabBrand New$12.49dmlsupplies (37,562) 97.1%Free 2-4 day shipping92 sold
- General Hydroponics pH Down 32oz Quart / 1 Gallon -buffer gh adjuster hydroponicOpens in a new window or tabBrand New$16.78Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns1,817+ sold
- General Hydroponics pH Test Indicator Control Kit 30 ml - up down wide spectrumOpens in a new window or tabBrand New$11.00dmlsupplies (37,562) 97.1%Free shipping58 sold
- General Hydroponics PH TEST INDICATOR 8oz GH pH 4.0 to 8.5 Spectrum *Free S&H*Opens in a new window or tabBrand New$16.00valleyhydroponics (18,866) 98.6%Free shipping121 sold
- General Hydroponics pH Test Indicator 8 oz Wide Spectrum / Super ConcentratedOpens in a new window or tabBrand New$15.254cornersorganics (124) 99.2%Free shipping
- General Hydroponics (GH) pH Control KitOpens in a new window or tabBrand New$23.99valleyhydroponics (18,866) 98.6%Free shipping134 sold
- General Hydroponics pH Test Kit Drops - Testing for Hydroponics and LiquidsOpens in a new window or tabBrand New$15.00dmlsupplies (37,562) 97.1%Free shipping313 sold
- Hydroponics pH Control Kit with pH Up and pH Down Solutions, pH Indicator, 8ozOpens in a new window or tabBrand New$16.90Save up to 20% when you buy morenavivanv (101) 97.4%Free shipping
- General Hydroponics pH Test Control Kit Up and Down 8oz Quart Gallon ComboOpens in a new window or tabBrand New$29.95 to $80.00dmlsupplies (37,562) 97.1%Free shipping166+ sold
- 400 g dry granular ph down (compare to General Hydroponics pH Down 1 quart)Opens in a new window or tabOpen Box$15.99bboy5900 (1,068) 99.5%Free 2-4 day shipping
- General Hydroponics RapidStart, Plant Food, 1-0.5-1, 500 mL.Opens in a new window or tabBrand New$88.83hydro_store (4,430) 98.8%Free shipping
- General Hydroponics CaliMagic, 6-GallonOpens in a new window or tabBrand New$262.45hydro_store (4,430) 98.8%Free shipping
- Hydroponics pH Control Kit with pH Up and pH Down Solutions, pH Indicator 8+8ozOpens in a new window or tabBrand New$19.90Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- Lot of 2 General Hydroponics pH Down Acid Liquid Nutrient Solution, 1-Quart - SHOpens in a new window or tabBrand New$24.00Save up to 20% when you buy moreblueridgedist (877) 99.6%Free shippingLast one7 sold
- General Hydroponics pH Up 32 oz / 1 Quart -buffer gh adjuster hydroponicOpens in a new window or tabBrand New$16.79Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns358 sold
- General Hydroponics Ph Up QtOpens in a new window or tabBrand New$11.00blueray123456789 (668) 100%+$2.99 shipping
- General Hydroponics PH 7.0 Calibration Solution- Quart - Free ShippingOpens in a new window or tabBrand New$21.95budqmr (4,774) 99.3%Free shipping
- General Hydroponics pH Test Indicator 8 oz Ounces - up Down Wide SpectrumOpens in a new window or tabBrand New$15.99tdsupplycorp (921) 98.7%Free shipping
- General Hydroponics pH 4.01 Calibration Solution, 8oz.Opens in a new window or tabBrand New$9.50Save up to 5% when you buy moresamuraigrowersupply (101) 97.4%Free shipping
- General Hydroponics pH Test Indicator Control Kit 1oz - up down wide spectrumOpens in a new window or tabBrand New$13.99Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns347 sold
- Hydroponics pH Up and Down Kit (8oz+8oz) pH Tester + Adjuster for waterOpens in a new window or tabBrand New$26.90Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- pH Down Liquid Buffering pH Adjuster for Hydroponics and Watering (4-32 Fl Oz)Opens in a new window or tabBrand New$12.50 to $19.50Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- General Hydroponics pH Control Test Kit - GH 8 oz Up Down Adjustment ComboOpens in a new window or tabBrand New$22.88Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns6,237 sold
- General Hydroponics pH Up 32 oz / 1 Quart -buffer gh adjuster hydroponicOpens in a new window or tabBrand New$16.99Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns1,470 sold
- General Hydroponics GH pH Test Indicator Control Kit 1 fl oz (30mL) ConcentrateOpens in a new window or tabBrand New$8.25bergh420 (1,879) 100%0 bids · Time left6d 13h left (Sun, 02:27 PM)$10.85Buy It NowFree shipping
- General Hydroponics GH1532 pH Down Liquid Fertilizer - 1 QuartOpens in a new window or tabBrand New$16.79Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns38 sold
- General Hydroponics pH Down 1 Gallon -buffer gh adjuster hydroponicOpens in a new window or tabBrand New$33.88Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns55 sold
- General Hydroponics pH Up Liquid, 1-Gallon NEWOpens in a new window or tabBrand New$28.49ja72174 (89) 100%Free shipping
- General Hydroponics Ph Down Only 3 fl ozOpens in a new window or tabBrand New$9.99Save up to 20% when you buy moresolefinest (19) 72.1%Free shipping
- 1500 g dry granular ph down (compare to General Hydroponics pH Down 1 Gallon)Opens in a new window or tabOpen Box$29.99bboy5900 (1,068) 99.5%Free 2-4 day shipping
- Digital Electric PH Meter LCD Tester Pocket Hydroponics Aquarium Water Test PenOpens in a new window or tabBrand New$6.71Save up to 15% when you buy moreWas: $7.90 15% offwincen-1 (20,359) 98%Free shippingFree returns295 sold
- General Hydroponics pH Control Test Kit - GH 8 oz Up Down Adjustment Combo FASTOpens in a new window or tabBrand New$22.89Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns449 sold
- General Hydroponics pH Up & pH Down 1 Quart each - GH Water pH Adjuster BufferOpens in a new window or tabBrand New$26.48Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns856 sold
- Advanced Nutrients Hydroponics PH Down 1 QuartOpens in a new window or tabBrand New$18.95plantedearthhydro (239) 99.1%+$7.80 shipping
- pH Down Liquid Premium Buffering For Hydroponics pH Stability - 1 Quart (32oz)Opens in a new window or tabBrand New$19.90Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- General Hydroponics Ph Up & Ph Down 8oz Combo Lot NewOpens in a new window or tabBrand New$15.95plantedearthhydro (239) 99.1%+$7.90 shipping
- General Hydroponics Flora Series FloraGro FloraBloom FloraMicro 16 oz pint - ghOpens in a new window or tabBrand New20 product ratings - General Hydroponics Flora Series FloraGro FloraBloom FloraMicro 16 oz pint - gh$32.90Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns1,799 sold
- General Hydroponics Ph Down GALLON / 128 fl ozOpens in a new window or tabBrand New$55.99Save up to 20% when you buy moresolefinest (19) 72.1%Free shipping
- PH Meter for Water Hydroponics Digital PH Tester Pen 0.01Hi-Accuracy Pocket SizeOpens in a new window or tabBrand New$11.99Top Rated Plusdomesticwaterfilterexpert (27,977) 99.6%Free shippingFree returns143 sold
- General Hydroponics pH Up 1 Gallon - buffer gh adjuster hydroponicOpens in a new window or tabBrand New$35.88Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns438 sold
- Concentrated pH Adjuster Up and Down Control Kit for Hydroponics Soil and FeedOpens in a new window or tabBrand New$16.90Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- General Hydroponics pH Control Kit for a Balanced Nutrient SolutionOpens in a new window or tabBrand New$19.99vaticstyles (25) 100%+$6.22 shipping
- Digital Electric PH Meter LCD Tester Pocket Hydroponics Aquarium Water Test PenOpens in a new window or tabBrand New$6.69inn_2720 (201) 99%Free shipping107 sold
- Advanced Nutrients Grow, Micro, Bloom Bundle pH Perfect Base GMB 1 LiterOpens in a new window or tabBrand New$38.89Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns1,404 sold
- LCD PH Meter Tester Digital Electric Water Test Pen Pocket Hydroponics AquariumOpens in a new window or tab⭐️⭐️⭐️⭐️⭐️ ✅ US Seller ✅High Quality ✅ Fast ShippingBrand New$9.65topfuture2018 (15,769) 99.4%Free shippingFree returns653 sold
- Digital Electric PH Meter Tester LCD Hydroponics Aquarium Water Pocket Test PenOpens in a new window or tabBrand New$8.99Save up to 15% when you buy moreWas: $17.98 50% offTop Rated Plusgatorcable (258,574) 99.6%Free shippingFree returns
- General Hydroponics Ph Down Only 1 fl ozOpens in a new window or tabBrand New$7.99solefinest (19) 72.1%Free shipping
- Chemboys pH Up Powder� Hydroponics pH Base Adjuster Liquid Fertilizer forOpens in a new window or tabBrand New$19.99 to $54.99diychemicals (73) 100%Free shipping
- Professional pH Down Liquid Fertilizer Hydroponics and Soil Watering - 16 Fl OzOpens in a new window or tabBrand New$15.90Save up to 15% when you buy morechemixsol (47) 100%Free shipping
- General Hydroponics pH Test Indicator 8 oz Ounces - up down wide spectrumOpens in a new window or tabBrand New$15.44hydro-pro (1,195) 94.4%Free shipping
- Advanced Nutrients Grow Micro Bloom pH Perfect Bundle Set Combo Base 500 mlOpens in a new window or tabBrand New$29.89Top Rated Plusgf_agriculture (45,424) 99.8%Free 2-3 day shippingFree returns777 sold
- Digital Electric PH Meter LCD Tester Pocket Hydroponics Aquarium Water Test PenOpens in a new window or tabBrand New$8.89Save up to 7% when you buy moretheperfectpart (871,796) 99.9%Free shippingFree returns2,382 sold
- General Hydroponics pH Down 8 ozOpens in a new window or tabBrand New$9.95plantedearthhydro (239) 99.1%+$4.30 shipping
- General Hydroponics Flora Series FloraGro FloraMicro FloraBloom Gallon - ghOpens in a new window or tabBrand New$104.99Top Rated Plusthshydro (73,126) 99.6%Free shippingFree returns449 sold
- Digital Electric PH Meter LCD Tester Pocket Hydroponics Aquarium Water Test PenOpens in a new window or tabBrand New$6.71Top Rated PlusWas: $8.99 25% offcablewirecanada (69,707) 96.8%Free shippingFree returns352 sold
- Hydroponics pH Down for adjusting and stabilizing pH (1 Quart, 32 Fl Oz, 950 mL)Opens in a new window or tabBrand New$16.90Save up to 20% when you buy morechemixsol (47) 100%Free shipping
- Digital PH Meter Tester Portable Pocket Water Pool Aquarium Wine HydroponicOpens in a new window or tabBrand New$8.98Save up to 10% when you buy moreTop Rated PlusFree 2-3 day shippinghanksminerals (99,233) 98%Free returns523 sold
- Items Per Page