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Nutrients & Additives
- Luther's Choice Bioponics
- Luther's Choice Bioponics: Additives
- Athena: Additives
- Athena Nutrients Australia
- Hy-Gen
- Hy-Gen Additives
- Terra Aquatica/General Hydro
- Terra Aquatica/General Hydro: Additives
- Green Planet
- Green Planet: Additives
- Mills
- Mills: Additives
- House & Garden
- House & Garden: Additives
- Growth Technology
- Growth Technology: Additives
- Professor's
- Professor's: Additives
- Flairform
- Flairform: Additives
- Canna
- Canna: Additives
- Ozi Magic
- Terpinator
- Ezi Oil
- Superthrive: Additives
- Plant Mechanics: Additives
- Plant Success: Additives
- GrowHard: Additives
- Mammoth: Additives
- Southern Star LED
- Lutherās Choice Bioponics
- Lighting (Lamps, Ballasts, LEDs, etc)
- Hydroponic Grow Lights
- Grow Tents
- Complete Hydroponic Kits
- Growing Media & Substrates
- Water Control (Instruments, Solutions, etc)
- Timers & Controllers
- Hygrometers/Thermometers
- Pest & Disease Control
- Heaters, Chillers & Coolers
- Fans & Ventilation
- Filters
- C02
- Pots, Tubs, Tanks
- Propagation
- Water, Air Pumps & Airstones
- Plant Training
- Plumbing
- Post Harvest & Beyond
- Electricals
- Clearance
- Tent Accessories
-
Nutrients & Additives
- Luther's Choice Bioponics
- Luther's Choice Bioponics: Additives
- Athena: Additives
- Athena Nutrients Australia
- Hy-Gen
- Hy-Gen Additives
- Terra Aquatica/General Hydro
- Terra Aquatica/General Hydro: Additives
- Green Planet
- Green Planet: Additives
- Mills
- Mills: Additives
- House & Garden
- House & Garden: Additives
- Growth Technology
- Growth Technology: Additives
- Professor's
- Professor's: Additives
- Flairform
- Flairform: Additives
- Canna
- Canna: Additives
- Ozi Magic
- Terpinator
- Ezi Oil
- Superthrive: Additives
- Plant Mechanics: Additives
- Plant Success: Additives
- GrowHard: Additives
- Mammoth: Additives
- Southern Star LED
- Lutherās Choice Bioponics
- Lighting (Lamps, Ballasts, LEDs, etc)
- Hydroponic Grow Lights
- Grow Tents
- Complete Hydroponic Kits
- Growing Media & Substrates
- Water Control (Instruments, Solutions, etc)
- Timers & Controllers
- Hygrometers/Thermometers
- Pest & Disease Control
- Heaters, Chillers & Coolers
- Fans & Ventilation
- Filters
- C02
- Pots, Tubs, Tanks
- Propagation
- Water, Air Pumps & Airstones
- Plant Training
- Plumbing
- Post Harvest & Beyond
- Electricals
- Clearance
- Tent Accessories
10 products
Bluelab Digital pH & Temperature Pen - Portable | Reliable | Easy to Calibrate
Regular price $130.00 Save $-130.00
Bluelab pH Pen
The ultimate handy solution for measuring pH and temperature!
Plants get their nutrient from minerals, but they can only get all the right minerals they need if certain conditions are right. Think of nutrients like a lock. pH is the key. A key factor that affects food uptake is whether your solution is acid or alkaline. We measure this in pH.
The Bluelab pH Pen also measures the temperature of the solution, as root health is vital to the success of a crop. Temperature affects the growth rate and structure of a plant so a solution temperature of 18 ā 22ĖC or 65 ā 72ĖF is recommended.
The hand held pH pen provides a compact quick and handy way to manage the success of your crop to ensure maximum uptake of nutrients.
Teamed with ourĀ Bluelab ppm or EC Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health.
Now isnāt that Handy!
Features
- Measures pH and temperature
- Selectable units for temperature
- Backlit LCD display
- Double junction probe (not replaceable)
- Successful pH calibration indicator
- Hold reading function
- Low battery indicator
- Fully waterproof
- Auto off function
- Automatic temperature compensation
- 1 x AAA alkaline battery included
Hy-Gen pH Complete Control Kit - 150ML pH Up & Down | pH Indicator Kit
Regular price $25.00 Save $-25.00
- In hydroponics "pH" is an extremely important factor. When it is poorly monitored or controlled, plants can become sick or die. It is therefore recommended that pH is tested daily. Hy-Gen pH Up and Hy-Gen pH Down provide the grower with an added control in maintaining optimum pH levels and hence maximizing nutrient availability and plant productivity. A too high or too low pH can complicate the absorption of important nutrients such as iron, calcium, magnesium, etc.
- Generally the pH of the hydroponic solution should be 6.3. It is acceptable, however, to maintain the pH in the range of 6.0 to 6.5. For rockwool a lower pH of 5.8 to 6.0 is recommended. This allows for optimum nutrient solubility and availability.
HY-GENĀ® COMPLETE pH KIT is an easy and accurate way to keep track of the nutrient solution pH. The kit gives the added ability to adjust your pH using the pH UP and pH DOWN solutions provided. Adjusting the pH is quite easy and after some time and experience it becomes an art as you start to learn more about your plants and growing system.
The concentrated indicator solution allows you to obtain a reading by using justĀ one dropĀ in the test tube provided. The calibrated colour chart provided helps test your pH to within 0.5 of a pH unit. Testing and adjusting your nutrient solution regularly will ensure your plants are healthy and happy.
Testing and adjusting the nutrient solution pH is made easy with a HY-GEN Complete pH Kit. The kit comes supplied with a test tube, 1mL transfer pipette, 150mL pH Up, 150mL pH Down, colour chart and concentrated indicator solution. Testing only requires one drop of indicator.
- Simple To Use
- Accurate Colour Chart
- Concentrated Indicator Solution
- Only One Drop Required
- pH Up And Down Solution
- Multiple Tests
- Transfer Pipette For Easy Use
Ā
Milwaukee pH600 Digital pH Pen | Single Point Calibration
Regular price $60.00 Save $-60.00
Our affordable and economical line of water monitoring equipment. The Milwaukee pH600 is a compact pH tester that has manual one-point calibration. These appeal to farmers on a budget and are designed for simple use.
Use and Care
All pH sensors have a limited life and response time gets longer with age. Properly maintaining your pH pen tester will give you fast, accurate results for longer. So, be sure to order the Milwaukee pH Maintenance Kit code PH-Main at checkout time! Ā This will be needed to help clean and condition the pH electrode before use!
Here are our top four tips.Ā
- Always store upright with the cap full of buffer or storage solution MA9015, not water.
- Clean your pH Pen Tester regularly by soaking in cleaning solution MA9016.
- Calibrate after cleaning and/or storage before testing to adjust for changes in the pH sensor.
- Gently stir the Pen in the sample for a faster result.
- Fast, accurate results with digital LCD readout
- Easy measurement: just place the probe in the sample, gently stir and wait for the reading to stabilize
- Simple one-point calibration with an easy-to-use trimmer located on the back of the pH tester to protect from accidental splashes
- Cap to protect the pH sensor and keep it wet when stored upright
- Low power demand for extended battery life (batteries included)
- pH range:Ā 0.0 to 14.0 pH
- Resolution:Ā 0.1 pH
- Accuracy:Ā +/- 0.1 pH
- Typical EMC Deviation:Ā +/- 0.2 pH
- Calibration:Ā Manual, 1 Point
- Environment:Ā 32 F to 122 F, 95% RH
- Approximate dimensions:Ā 6 x 1.2 x 0.95 inches
- Weight:Ā 3 ounce
- Battery Life:Ā 700 hours
Bluelab pH Controller - Hands-free Monitor | Auto pH Adjustment
Regular price $635.00 Save $-635.00
Bluelab pH Controller
Hands-free monitoring and dosing of solution pH levels. Simple.
We know pH levels can be the difference between a great crop and well, a disaster. Measuring and adjusting nutrient solution levels constantly can be time-consuming. And letās face it; you have better things to do.
Our clever pH controller automatically monitors and fine-tunes the pH levels for you. Set your pH parameters and let the Bluelab pH Controller keep you on point dosing in your set direction pH up or down solution, not both. You simply set it and forget. The pH is taken care of. So, you can relaxā¦
Features
- Automatic control and monitoring of system pH with reservoirs up to 200 US gal / 760 L
- Plant-safe green backlit LCD with adjustable brightness
- Large, easy to read displays
- Easy to navigate menu to program and adjust settings
- Simple push-button pH calibration with on screen guide
- Flashing high / low alarm with control lockouts
- Dosing lockouts to protect from over-dosing
- Auto resume dosing on restart after power loss
- Water resistant, wall mount design
- 13 foot (4 meters) acid/alkali resistant dosing tube supplied
- Use with either undiluted Bluelab pH Up or Down
- International power supply
- Replaceable double junction pH probe
- Separate Bluelab Temperature Probe (for pH ATC)
- Replaceable peristaltic pump and tubes

Bluelab Soil pH Pen - For Soil or Coco | Temp Compensation | Digital Calibration
Regular price $249.95 Save $-249.95
The ultimate handy solution for measuring soil pH and temperature!
The Bluelab Soil pH Pen provides a pH and temperature reading of soils and media, so you know that the right nutrients will be made available to your plants.
In soils or growing media, pH strongly influences the availability of the microorganisms to plants in the soil. Now you can closely monitor and adjust the pH levels to optimize plant health and performance.
It will also measure solutions tooā¦
Now isn't that Handy!
Specifications
-
Measurement Range:
- 0.0 ā 14.0 pH
- 0 ā 50 ĢC / 32 ā 122 ĢF
-
Resolution:
- 0.1 pH
- 1 ĢC / 1 ĢF
- Accuracy at 25ĢC / 77ĢF: ± 0.1 pH, ± 1 ĢC / ±2 ĢF
- Automatic Temperature Compensation: Yes
- Operating Environment: 0 ā 50 ĢC / 32 ā 122 ĢF
- Calibration: Requires two-point, pH 7.0 & pH 4.0 or pH 10.0 calibration
- Power Source: 1 x AAA alkaline battery
- Certifications: CE and FCC
- One year free repair or replacement guarantee.
In The Box
- [1] x Bluelab Soil pH Pen
Ā

Bluelab Pro Controller Connect ONLY - Compatible with Bluelab M3 M4 L3 Dosing Pump
Regular price $1,440.00 Save $-1,440.00
Bluelab Pro Controller
Full control of reservoir pH, conductivity and temperature in one place.
When connected to a dosing system the Bluelab® Pro Controller⢠manages pH, conductivity and temperature levels in reservoirs. As your plants feed, pH and nutrients are automatically adjusted to the desired range.
Monitor, data log and control your system in real time for immediate response to personalised settings and system alerts, direct from your computer.
Customise your system by pairing with BluelabĀ® PeriPodā¢:
Choose which version will suit your system best. Read more in our dosing size guide, created to help you if youāre unsure.
- PeriPod L3 Flow Rate up to: 1200ml/min per pump
- PeriPod M3 Flow Rate up to: 120ml/min per pump
BONUS:
- Bluelab Connect Stick Included
Features
- Control pH, conductivity and temperature when connected to a doser
- Easy to navigate menu to program and adjust settings
- ONE Bluelab® Connect⢠Stick is included
- Data logging capability (download free Bluelab® Connect Software⢠online)
- Remote viewing with Bluelab® Connect⢠Software and Apps
- Bright, plant safe green LED with adjustable brightness
- Simple pH calibration with on screen instructions
- High and low alarm control lockouts
- Auto resume dosing on restart after power loss
- Dosing lockouts to protect from over-dosing
- Replaceable BluelabĀ® probes
- Use Bluelab® PowerPod⢠to connect to other mains operated dosers and/or heating or cooling devices
Ā
FlairForm pH Test Kit - Sufficient for over 800 Tests | Fast pH Readings
Regular price $15.00 Save $-15.00
pH Dropper āĀ Test Kit
For reliable & fast pH readings
āUnlike electronic pH meters, there is NO complex or costly maintenance required with the pH Test Kitā
Super concentrated ā ONE drop per test āĀ approximately 800 tests.
pH range 4.0 to 8.0:Ā Many pH testers do not operate below pH 6 (See pH Control).
Produces fast pH readings:Ā Note that pH meter electrodes usually need to be left in the sample for several minutes before an accurate/ stable reading is produced.
Waterproof colour chart on side of bottle.
Perfect back-up for die-hard pH meter users.
Supplied with sturdy test tube.
How accurate is Flairformās pH Test Kit?
When using a pH Test Kit, you will get accurate results every time. Even if electronic pH meters are properly maintained, they are still susceptible to error because lower quality electrodes respond to foreign āspeciesā (e.g. sodium). For this reason, if using an electronic pH meter, occasionally cross check your readings with a pH Test Kit.
Bluelab Leap pH Probe - for Guardian Monitor & Combo & pH Meter
Regular price $99.95 Save $-99.95
A replacement probe for Bluelab Combo and pH Meters as well as the Bluelab Guardian Monitor.
The Bluelab pH Probe is a replacement pH probe (electrode) suitable for use with Bluelab products that test the pH value of a solution.
Unfortunately pH Probes do not last forever as they age through normal use and will eventually fail. With good care and use (keeping the probe tip wet and cleaning once a month) you will extend its life.
The Bluelab pH Probe has a double junction reference which provides a longer life than many other pH probes and is a gel filled non-refillable probe, so apart from cleaning is maintenance free.
Replace only the pH probe, not the whole meter!
Specifications
- Measurement Range: 0.0 ā 14.0 pH
- Accuracy at 25ĢC / 77ĢF: ± 0.1 pH
- Reference: Double junction Ag / AgCl, Sat. KCI gel
- Operating Environment: 0 ā 60 ĢC / 32 ā 144 ĢF
- Calibration: Not required for conductivity. pH requires two point, pH 7.0 & pH 4.0 or pH 10.0 calibration
- User Manual Languages Available: English; EspanŅol; Français; Nederlands; Deutsch
- Six month free repair or replacement guarantee.
Bluelab Combo Meter - EC TDS | Conductivity | PH | Temperature | Battery Powered
Regular price $390.00 Save $-390.00
Bluelab Combo Meter
Itās all you need for simple and reliable crop management.
The Bluelab Combo Meter is a portable pH, conductivity and temperature meter all in one. If you are experiencing problems with yellow leaves, or slow stunted growth, the Bluelab Combo Meter will soon tell you if each parameter is within the plants requirements. Adjustments can be quickly made to get your crop back on track.
The Bluelab Combo Meter has two probes, a Bluelab pH Probe and a Bluelab Conductivity/Temperature Probe. When taking a reading, simply place them into the solution and the selected reading is displayed on screen. As the Bluelab Combo Meter is portable and does not require a power supply to operate, it can be used anywhere, anytime to help you manage your cropsā daily nutrient requirements.
Calibration of the pH probe is simple as instructions are supplied on the back of the meter and the easy push button method makes this one of the simplest meters to use.
The pH probe is replaceable so you can use this meter for years to come. The Conductivity/temperature probe does not require calibration as this is locked in during manufacture.
Often referred to as āTheĀ Apple of Metersā!
Features
- Measures pH, conductivity / nutrient (EC, CF, ppm 500 and ppm 700) and temperature (°C, °F)
- Lightweight and portable
- Large easy to read display
- Simple push button pH calibration
- Successful pH calibration indicator
- No calibration required for conductivity and temperature
- Replaceable double junction pH probe included
- Over range and under range indicators
- Low battery indicator
- 2 x AAA alkaline batteries included
- Auto off function