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Hydroponic Systems, Equipment and Testing

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Hydro Flow Barbed Straight Connector 1/4" - Single

Use these high quality barbed 3/16 in connectors for your irrigation systems or hydroponic systems. Feature 3 barbs for a tight fit. Bump stop assures fittings are completely and securely inserted in tubing. Made with 100% virgin plastic.

Barbed Straight Connector 1/4" - Single

$0.26

Barbed Straight Connector 1/2" - Single

Use our 1/2" fittings to design and build your custom irrigation system.

Barbed Straight Connector 1/2" - Single

$0.66

HM Digital HM Digital Replacement Probe for pH

Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement range: 0-14 pH with a waterproof housing. Digital automatic calibration (one point), with

HM Digital Replacement Probe for pH

$46.87

HM Digital Meter HM Digital EC/TDS HydroTester (COM-80)

Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testing. Four scales: EC: µS, mS; TDS: ppm, ppt

Meter HM Digital EC/TDS HydroTester (COM-80)

$46.44

Bluelab Meter Bluelab Conductivity Pen

The Bluelab ppm pen measures how much food the plant has available, provide a compact, quick and handy way to manage the success of your crops to ensure they have the nutrients they need, and has been specially developed as an affordable and effective opt

Meter Bluelab Conductivity Pen

$104.94

General Hydroponics Rubber Grommet 1/2"

1/2" Grommet for Waterfarm

Rubber Grommet 1/2"

$0.66

Hydro-Logic Stealth/Small Boy KDF85/Catalytic Carbon Upgrade Filter

Replacement carbon filter for Hydro-Logic Stealth reverse-osmosis filtration systems.

Hydro-Logic Stealth/Small Boy KDF85/Catalytic Carbon Upgrade Filter

$50.95

Botanicare Botanicare 40 Gallon Reservoir Lid - White

Designed for excellent performance and easy maintenance, Botanicare's Premium Reservoirs are true capacity with exceptional durability. These reservoirs are a reincarnation of Botanicare's original reservoir offering with the benefits of our Low Profile r

Botanicare 40 Gallon Reservoir Lid - White

$98.16

Calibration Solution PH4 - 8 Oz

A meter is only as good as the calibration. General Hydroponics Standard Reference Solution is available in pH 4.01 (pink) and 7.01 (green). Solution should not be reused. Pour a small quantity from bottle, calibrate meter, and dispose of used solution. P

Calibration Solution PH4 - 8 Oz

$9.03

Israeli Filter Assembly 140 Mesh

A post pump filter assembly to stop drip heads from clogging. To clean, simply unscrew the bottom of the filter, remove the disc assembly, and clean out debris. Filter disc assembly never needs changing.

Israeli Filter Assembly 140 Mesh

$43.00

Medium Round Air Stone - 3/16" ID

When powered by a high-output air pump, this large (13⁄8" x 15⁄8" tall ) air stone continuously releases thousands of bubbles to adequately aerate most large hydroponic reservoirs. Increased oxygen in the nutrient solution prevents root rot, encourages nu

Medium Round Air Stone - 3/16" ID

$4.99

Hydro-Logic Hydro-Logic Stealth/Small Boy Float Valve

This float valve has a 1/4" quick-connect fitting and adjustable water level. It can be mounted vertically or horizontally. It works great for the Stealth RO and Small Boy or any other filter system with 1/4" tubing. Use plumber's tape on threads.

Hydro-Logic Stealth/Small Boy Float Valve

$28.99

Tubing Air Clear Vinyl 3/16" ID - 100 Ft Roll

Premium vinyl tubing made of excellent quality. Made in the USA. Ideal for air movement from an air pump to air stones, air discs, Aqua Lung, Water Winds, etc.

Tubing Air Clear Vinyl 3/16" ID - 100 Ft Roll

$22.39

Hydro Flow Hydro Flow In-Line Micro Irrigation Valve 3/16 in

Hydro Flow Micro Irrigation Valve allows you to adjust your flow rate in your drip application. Fits snugly to Hydro Flow 3/16 in tubing.

Hydro Flow In-Line Micro Irrigation Valve 3/16 in

$1.25

HM Digital Meter HM Digital Waterproof pH Pen

Measures pH and temperature. Auto-ranging three point calibration with digital fine tuning. pH buffer 4 solution is in a sponge embedded in a clear cap. Measurement range: 0-14 pH with a waterproof housing. Digital automatic calibration (one point), with

Meter HM Digital Waterproof pH Pen

$108.07

$64.84

Bluelab Bluelab pH 7.0 Calibration Solution 250 ml

"pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope).Calibration Solution should be stored in a cool place out

Bluelab pH 7.0 Calibration Solution 250 ml

$13.99

General Hydroponics GH pH Up - qt

For plants to grow their best it's important that the nutrient pH be slightly acidic - the range of 5.5 to 6.5 is considered ideal for most crops. The General Hydroponics pH Up (Base) is formulated using Potassium Hydroxide and Potassium Carbonate which a

$15.68

General Hydroponics GH pH Up - gal

For plants to grow their best it's important that the nutrient pH be slightly acidic - the range of 5.5 to 6.5 is considered ideal for most crops. The General Hydroponics pH Up (Base) is formulated using Potassium Hydroxide and Potassium Carbonate which a

$39.06

General Hydroponics GH pH Down - Gal

The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.

GH pH Down - Gal

$39.06

Botanicare Botanicare 40 Gallon Reservoir - White

Designed for excellent performance and easy maintenance, Botanicare's Premium Reservoirs are true capacity with exceptional durability. These reservoirs are a reincarnation of Botanicare's original reservoir offering with the benefits of our Low Profile r

Botanicare 40 Gallon Reservoir - White

$145.14

Tubing Black Soft Line 3/4" - 100' Roll

Premium vinyl tubing made of excellent quality. Made in the USA.

Tubing Black Soft Line 3/4" - 100' Roll

$96.35

Barbed Tee Fitting 3/4" - Single

Use our 3/4" fittings to design and build your custom irrigation system.

Barbed Tee Fitting 3/4" - Single

$1.49

Barbed Tee Fitting 1/4" - single

Use our 1/4" fittings to design and build your custom irrigation system.

Barbed Tee Fitting 1/4" - single

$0.50

Barbed Tee Fitting 1/2" - Single

Use our 1/2" fittings to design and build your custom irrigation system.

Barbed Tee Fitting 1/2" - Single

$0.66