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Nutrient & PH Management
Nutrients and pH management products are essential for maintaining a balanced feeding programme in indoor growing systems. Alongside base nutrients, pH control products help ensure plants can absorb the feed they need, making them a key part of healthy root development and consistent plant growth.
At Acorn Horticulture, we supply a range of nutrients and pH management products in the UK for growers using coco, soil and hydroponic systems. Whether you are monitoring feed with measuring tools or building a complete feeding schedule with nutrients and boosters, good pH management is vital for indoor plant health.
AQUALINE EC TRUNCHEON
£20.00 incl. Vat
AQUA MASTER PH TEMP METER P50 PRO 2
£60.00 incl. Vat
- IP67 waterproof rated
- Large, easy to read, digital display
- Fully calibrated
- Replaceable probes
- Calibration indicator
- 2 decimal places
- AAA batteries
How does the meter work?
- Prior first usage – soak your pH meter in tap water for 12 hours.
- Remove the protective cover.
- Gently clean the electrode with distilled water and dry it off.
- Press the On/off button to start the meter.
- Insert the meter upright into the solution up to the edge and stir gently. Wait a few seconds for the correct value to appear on the display.
- Press the C/F button to switch between Celsius and Fahrenheit.
- Rinse the electrode with water after use and press the On/off button to turn off the meter.
Growth Technology pH Buffer 4 and 7 – 300ml
£8.99 incl. Vat
Essentials Handheld EC Nutrient Meter
Original price was: £55.00.£49.50Current price is: £49.50. incl. Vat
The HortiCare nutrient tester is designed to test the levels of nutrient concentrations in solutions that feed plant roots. The unit will test the levels of other essential mineral elements in soluble form. This simple to use instrument is housed in a water resistant case, suitable for everyday use and features an easy to read 8mm LCD display. The unit measures EC (mS), cF or TDS (ppm) at the switch of a button.
The HortiCare nutrient tester incorporates an automatic calibration feature. At the touch of a button, the instrument will automatically recalibrate itself when used in conjunction with 6.7 mS (67 cFor 4700 ppm) standard solution.
The HortiCare tester is ideal for testing the amount of dissolved solids (nutrients) in water.
Essentials Handheld PH Meter
Original price was: £55.00.£49.50Current price is: £49.50. incl. Vat
The HortiCare pH tester is a user-friendly and simple to use pH tester that incorporates an automatic calibration feature. At the touch of a button, the HortiCare pH tester will automatically recalibrate itself when used in conjunction with a 7pH buffer solution.
The Horticare pH tester is housed in a water resistant case and features an easy to read 8mm LCD display indicating pH over the range of 0 to 14pH with a resolution of 0.1pH and an accuracy of ±0.2pH. The pH tester also incorporates automatic temperature compensation over the range of 0 to 70°C.
The HortiCare pH tester is ideal for measuring pH in hydroponic solutions and invaluable when mixing concentrates with water.
Growth Technology pH Buffer 7 – 300ml
£5.00 incl. Vat
Growth Technology pH Buffer 4 – 300ml
£5.00 incl. Vat
Growth Technology PH Probe Refil + Storage
£5.00 incl. Vat
With care and attention you can keep a pH meter in good shape for a long time. Doing so will enhance and ensure their accuracy and extend their useful life. Probe Refill and Storage Solution solution can be used to store pH meters when not is use. Basically the probe at the end of the meter should be just immersed in the solution. This will condition the probe and maximise its useful life. The same solution can be used for refilling the probes on certain meters. The Probe Cleaning Solution is used for cleaning pH probes to remove salt deposits from nutrients and other accumulations.
Growth Technology Conductivity Standard – 250ml
£5.00 incl. Vat
EC meters should be calibrated regularly. Conductivity Standard is a solution with a known, fixed conductivity (EC), it is used for calibrating and maintaining the accuracy of your meter.
Please follow the instructions that come with you EC meter and always rinse the porbe after use to maximise accuracy and life of your device.
Just pour out what you need into a measuring cup, and use this to calibrate your pH meter. After calibration you must discard the used solution. Do NOT pour back into the bottle as this may contaminate the bottle and make the solution inaccurate.
PH Test Kit – Liquid 4 – 10
£4.00 incl. Vat
A pH Test Kit allows quick and accurate monitoring of pH levels in your nutrient solution.
For accurate acidity testing follow the procedure below.
Take a 2ml sample of solution from the tank in the test tube provided.
Add 2 drops of reagent.
Shake the test tube and compare the colour against the test strip to determine the acidity.
Discard the test solution and rinse out the test tube.
Adjust the pH of your nutrients and retest if neccessary.
PH Test Kit – Liquid 6 – 7.6
£4.00 incl. Vat
Low or high pH levels affect the availability of the minerals required by the plant. The correct pH range for hydroponics is between 5.5 and 6.5, for soil it is not so critical, but generally around 6.3; outside of these figures nutrient problems will quickly occur as minerals become insoluble. The nutrient strength needs to be matched to the current stage of plant development. Too high a concentration can quickly burn a plant, whilst too low produces pale, weak growth. Measuring is knowing. Good results are attainable by anyone prepared to stick to this rule. Whimsical guesswork rarely leads to success!
The Nutriculture pH Test Kit allows quick and accurate monitoring of pH levels in your nutrient solution.
For accurate acidity testing follow the procedure below.
•Take a 2ml sample of solution from the tank in the test tube provided.
•Add 2 drops of reagent.
•Shake the test tube and compare the colour against the test strip to determine the acidity.
•Discard the test solution and rinse out the test tube.
•Adjust the pH of your nutrients and retest if neccessary.
Bluelab PH Pen
Original price was: £99.50.£89.50Current price is: £89.50. incl. Vat
The Bluelab pH Pen is the latest innovation for hand held pH meters and is the ultimate handy solution for measuring pH.
Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control.
The Bluelab pH Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health.
The Bluelab pH Pen and conductivity pen range has been specially
Bluelab EC Pen
£89.00 incl. Vat
The Bluelab EC Pen and Bluelab ppm Pen are the latest innovation for hand held conductivity meters and the ultimate handy solution for measuring conductivity.
Hydroponic growing lets you give the best care possible to your plants. The quality of care is in your control.
The Bluelab EC and ppm pens measure how much food the plant has available. You have the option of either the Bluelab EC Pen or the Bluelab ppm Pen.
The Bluelab EC and ppm pens provide a compact, quick and handy way to manage the success of your crops to ensure they have the nutrients they need. Teamed with our Bluelab pH Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health.
The Bluelab pH Pen, Bluelab EC Pen and Bluelab ppm Pen range has been specially developed as an affordable and effective option for hobby or small scale growers.
Bluelab EC Truncheon
£99.00 incl. Vat
It is essential when growing with a hydroponic solution to know what the strength of the solution is before feeding your plants and while they are growing. This is easy if you use the Bluelab Truncheon!
To take a reading of your solution - simply place the probe head into the solution for 1-2 minutes to reach the same temperature of your nutrient. Remove from the solution and place back in to take the reading as indicated by the flashing lights. Rinse the probe after use in fresh water and clean once a week to ensure the Truncheon Nutrient Meter remains accurate.
EC (0.2 - 3.6), CF (2 - 36) and ppm scales (TDS and 700 scale)
Fully waterproof
No calibration required
Auto sense on and off
No external switches or adjustable buttons
Battery life minimum 1 year (or shelf life of battery
What Is Nutrient and pH Management?
Nutrient and pH management refers to the process of providing plants with the right feed while maintaining the correct acidity or alkalinity of the nutrient solution. Even if the right nutrients are present, plants may struggle to absorb them properly if pH is out of balance.
This makes pH management one of the most important parts of successful indoor feeding.
Why pH Management Matters
pH affects how easily plants can access the nutrients in their feed solution. If the pH is too high or too low, nutrient uptake can become less efficient and plant health can suffer.
- Supports better nutrient uptake
- Helps prevent nutrient lockout issues
- Improves consistency in feeding programmes
- Especially important in hydroponic and coco systems
- Supports healthier root-zone conditions
Maintaining correct pH is one of the simplest ways to improve plant performance and avoid feeding problems.
Products Used for pH Management
This category can include products designed to help growers build and balance their feed solution correctly.
- pH up and pH down products – used to adjust nutrient solution balance
- Base nutrients – used as the foundation of the feeding programme
- Feed support products – used to help maintain a balanced nutrient routine
These products are most effective when used with accurate testing and regular monitoring.
Nutrients, pH and Indoor Feeding Programmes
Nutrient and pH management products are commonly used alongside:
- Measuring tools to monitor pH and EC
- Beneficial products to support plant health
- Growth boosters for vegetative support
- Bloom boosters for flowering support
Together, these products help create a more complete and stable indoor feeding programme.
pH Management in Different Growing Media
pH management matters across all indoor systems, but it is especially important in:
- Coco where frequent feeding is common
- Hydroponic systems where nutrient solutions are closely managed
- Rockwool where accurate feed control is essential
Although soil is more naturally buffered, monitoring pH can still help growers maintain stronger and more consistent plant health.
Who Needs Nutrient and pH Management Products?
These products are useful for any indoor grower who wants more control over feeding, but they are especially important for growers using coco and hydroponic systems. They are also valuable for growers dealing with unexplained nutrient issues or trying to improve consistency in their setup.
Even a simple feeding programme benefits from a well-managed pH balance.
Helpful Guides for Nutrients and pH
If you want to learn more about plant feeding and pH balance, explore our guides:
- The Role of pH and EC in Maintaining Plant Health in Hydroponic Systems
- Understanding the Role of Nutrients in Hydroponic Gardening
- The Ultimate Guide to Understanding Plant Nutrient Needs
These guides will help you understand how to build a more balanced and effective indoor feeding routine.
Shop Nutrients and pH Management Products in the UK
At Acorn Horticulture, we stock nutrients and pH management products for indoor growers across the UK. Whether you need pH adjustment products, feed support or nutrient essentials for a more controlled feeding routine, our range is designed to help you maintain healthier plants and better nutrient uptake.
Browse our full range above to find the right nutrient and pH management products for your setup.
FAQs
Why is pH important in indoor growing?
pH affects nutrient uptake, so even a good feed can perform poorly if the pH is out of range.
Do I need pH management in soil?
Soil is more forgiving, but pH can still affect plant performance and nutrient availability.
Is pH management more important in hydroponics?
Yes, hydroponic systems usually require closer pH control because nutrients are delivered directly through the solution.
What should I use with pH management products?
They are best used alongside accurate measuring tools and a balanced nutrient programme.
