Showing 121–138 of 138 resultsSorted by latest

CANNA Mono Elements Trace Mix 1 Litre

£15.00 incl. Vat

CANNA Mono Elements Trace Mix 1 Litre is a liquid mineral trace element supplement designed to support healthy plant development, stimulate growth and bloom, and help correct trace element deficiencies when used alongside your regular feeding programme.

  • Liquid mineral trace element fertiliser for plant development
  • Contains essential trace elements used in important enzyme systems
  • Suitable as a supplementary nutrient to support growth and bloom
  • Easily soluble formula for direct plant absorption
  • Helps reduce the effects of trace element deficiencies
  • Designed to work alongside CANNA nutrient ranges including TERRA, AQUA, HYDRO and COCO

CANNA Mono K 20% Potassium 1 Litre

£15.00 incl. Vat

CANNA Mono K 20% Potassium is a liquid potassium mononutrient designed to support strong plant development, improve bloom performance and help correct potassium shortages within a balanced feeding programme.

  • Liquid potassium mononutrient for targeted plant nutrition
  • Contains 20% potassium
  • Easily soluble for direct plant uptake
  • Helps support bloom development, protein production and carbohydrate formation
  • A practical option when addressing potassium deficiency
  • Suitable as a supplementary nutrient during the flowering phase
  • Supplied in a 1 litre bottle

CANNA Mono P 20% Phosphor 1 Litre

£15.00 incl. Vat

CANNA Mono P 20% Phosphor is a liquid phosphorus mononutrient designed to support plant development, encourage blooming performance and help correct phosphorus deficiency as part of a balanced feeding programme.

  • Liquid phosphorus supplement for targeted plant nutrition
  • Helps support bloom development and secondary metabolite production
  • Easily soluble formula for direct plant absorption
  • Suitable for use alongside CANNA nutrient ranges
  • Useful for addressing signs of phosphorus deficiency
  • 1 litre bottle for practical use in regular feeding schedules

CANNA Mono N 27% Nitrogen 1 Litre

£16.00 incl. Vat

CANNA Mono N 27% Nitrogen is a liquid mononutrient designed to support strong vegetative growth and provide a direct source of nitrogen when plants need additional nutritional support.

  • Liquid nitrogen mononutrient for targeted plant feeding
  • Helps stimulate vigorous vegetative growth
  • Suitable for correcting or preventing nitrogen deficiency
  • Easily soluble for direct plant absorption
  • 100% nutrient compatible with the CANNA feeding range
  • Ideal as a supplementary nutrient alongside base feeds

CANNA Mono MgO 7% Magnesium Sulphate 1 Litre

£15.00 incl. Vat

CANNA Mono MgO 7% Magnesium Sulphate 1 Litre is a liquid magnesium supplement designed to support healthy plant development, strong photosynthesis and balanced feeding in a wide range of growing systems.

  • Liquid magnesium supplement for correcting or preventing magnesium deficiency
  • Supports photosynthesis as magnesium is a key part of chlorophyll
  • Easily soluble formula for direct plant uptake
  • Suitable as a supplementary nutrient during growth and bloom
  • Made to work alongside CANNA base nutrients and feeding programmes
  • Handy 1 litre bottle for regular garden and hydroponic use

CANNA Mono Fe Plus Iron Chelate 1 Litre

£15.00 incl. Vat

CANNA Mono Fe Plus Iron Chelate 1 Litre is a liquid iron mononutrient designed to help replenish iron deficiency and support healthy plant growth, chlorophyll production and flowering performance.

  • Liquid iron chelate for direct plant uptake
  • Helps support photosynthesis and chlorophyll production
  • Suitable for correcting or preventing iron deficiency
  • Can be mixed with fertilisers as part of a wider feeding programme
  • Stable across different pH levels
  • Designed for use alongside CANNA nutrient ranges

CANNA Mono Ca15% Calcium 1 Litre

£15.00 incl. Vat

CANNA Mono Ca15% Calcium 1 Litre is a liquid calcium mononutrient designed to support strong plant structure, healthy development and balanced nutrient transport. Easy to dissolve and readily absorbed, it can be used to help correct calcium shortages or as a supplementary feed alongside your regular nutrient programme.

  • Liquid calcium mononutrient for plant development and structural support
  • Helps stabilise cell walls and strengthen plant tissue
  • Supports water and nutrient transport within the plant
  • Suitable for correcting calcium deficiency or supplementing growth
  • Produced from quality ingredients and designed for compatibility with CANNA nutrients
  • Supplied in a convenient 1 litre bottle

BioBizz Top MAX 1L

£20.00 incl. Vat

BioBizz Top Max 1L is a 100% organic flowering and fruiting promoter designed to support bigger, heavier flower and fruit development while helping plants make better use of available nutrients.

  • 100% organic flowering and fruiting booster
  • Formulated to help increase the size and weight of flower and fruit clusters
  • Supports nutrient uptake during the productive stage of growth
  • Suitable for soil, soilless mixes, coco and hydroponic systems
  • Designed to work alongside BioBizz nutrients such as Bio-Grow and Bio-Bloom
  • Supplied in a 1L bottle for regular flowering feed programmes

BioBizz Root Juice 1L Root Stimulator

£40.00 incl. Vat

BioBizz Root Juice 1L is an organic root stimulator designed to encourage strong root development and support healthy biological activity in the root zone across hydroponics, soil and coco growing systems.

  • Supports vigorous root development from the early stages of growth
  • Made with humic acids, fulvic acids and seaweed
  • Helps encourage biological life in the radicular system
  • Suitable for hydroponics, soil crops and coconut substrates
  • A useful addition for improving crop strength and resilience
  • Ideal for growers looking to build a healthy, active root zone

Growth Technology pH Buffer 7 300ml

£5.00 incl. Vat

Growth Technology pH Buffer 7 300ml is a fixed-value calibration solution designed to help keep pH meters accurate and reliable for routine hydroponic and horticultural testing.

  • pH 7 buffer solution for calibrating pH meters
  • Helps maintain ongoing meter accuracy with regular use
  • Suitable for hydroponic, propagation and general horticultural testing routines
  • Practical 300ml bottle for home growers and grow room maintenance
  • Useful for checking pH meters before nutrient mixing and reservoir adjustments
  • Ideal alongside pH meters, probe care solutions and other calibration fluids

Growth Technology pH Buffer 4 300ml

£5.00 incl. Vat

Growth Technology pH Buffer 4 300ml is a fixed-value calibration solution designed to help you check and calibrate pH meters for accurate nutrient and water testing.

  • Fixed pH 4 calibration solution for pH meter accuracy checks
  • Helps maintain reliable pH readings in hydroponic and horticultural systems
  • Suitable for routine meter calibration as part of regular maintenance
  • Useful for growers managing nutrient uptake and water quality
  • 300ml bottle size for practical grow room and propagation use
  • Ideal for use alongside wider nutrient and pH management routines

Growth Technology pH Probe Refill and Storage Solution

£5.00 incl. Vat

Growth Technology pH Probe Refill and Storage Solution is designed to help keep pH meters in better working condition between uses, supporting probe care, measurement accuracy and a longer useful life.

  • Helps condition pH meter probes when the meter is not in use
  • Supports ongoing pH meter accuracy with regular probe care
  • Suitable for storing the probe tip immersed in solution
  • Can be used for refilling probes on certain compatible meters
  • Helps extend the useful life of your pH probe with proper maintenance
  • Ideal for hydroponic, indoor growing and general nutrient management routines

Growth Technology Conductivity Standard 250ml

£5.00 incl. Vat

Growth Technology Conductivity Standard 250ml is a calibration solution designed to help keep EC meters accurate and reliable for everyday hydroponic and horticultural use.

  • Known fixed conductivity solution for calibrating EC meters
  • Helps maintain meter accuracy for nutrient and feed checks
  • Simple to use by pouring a small amount into a clean measuring cup
  • Supports routine meter maintenance in hydroponic systems and grow rooms
  • Used solution should be discarded after calibration to avoid contamination
  • 250ml bottle size for practical home grow and horticultural use

pH Test Kit Liquid 4 to 10

£4.00 incl. Vat

The pH Test Kit Liquid 4 to 10 is a simple and practical way to check the acidity of your nutrient solution and keep your feeding programme on track.

  • Quick and accurate pH monitoring for nutrient solutions
  • Suitable for testing pH levels from 4 to 10
  • Simple liquid reagent method with colour comparison chart
  • Helps identify when pH adjustment is needed
  • Useful for hydroponic systems, tanks and mixed feed solutions
  • Includes a test tube for easy sample checking

Nutriculture pH Test Kit Liquid 6 – 7.6

£4.00 incl. Vat

The Nutriculture pH Test Kit Liquid 6 - 7.6 is a simple and reliable way to check the acidity of your nutrient solution, helping you keep plants within a healthy pH range for hydroponic and soil growing.

  • Quick liquid pH test for nutrient solutions
  • Tests across the 6 to 7.6 pH range
  • Helps identify pH issues that can reduce nutrient availability
  • Easy colour comparison method using the included test tube and chart
  • Suitable for hydroponic systems, reservoirs and general nutrient mixing
  • Straightforward testing process for regular pH monitoring

Bluelab pH Pen

Original price was: £99.50.Current price is: £89.50. incl. Vat

The Bluelab pH Pen is a compact handheld meter designed for quick, accurate pH measurement in hydroponic systems, nutrient solutions and everyday plant care.

  • Handy portable design for simple pH testing
  • Helps you maintain the right pH for nutrient uptake
  • Suitable for hydroponics, reservoirs and nutrient mixing
  • Quick and convenient way to monitor feed solution quality
  • Pairs well with Bluelab EC or ppm pens for complete solution checks
  • Ideal for growers who want easy routine pH management

Bluelab EC Pen

£89.00 incl. Vat

The Bluelab EC Pen is a compact handheld conductivity meter designed to help growers quickly check nutrient strength in hydroponic and plant feeding solutions.

  • Measures conductivity to help monitor nutrient availability
  • Compact handheld design for quick spot checks
  • Suitable for hobby and small-scale growing setups
  • Useful for managing hydroponic reservoir strength
  • Helps maintain more consistent feeding routines
  • Pairs well with the Bluelab pH Pen for complete nutrient solution checks

Bluelab EC Truncheon Nutrient Meter

£99.00 incl. Vat

The Bluelab EC Truncheon makes it quick and straightforward to check the strength of your nutrient solution before feeding and throughout the growing cycle. Designed for hydroponic use, it gives easy-to-read EC, CF and ppm readings without the need for regular calibration.

  • Measures nutrient strength in EC, CF and ppm scales
  • EC range 0.2 to 3.6 for routine hydroponic nutrient monitoring
  • Fully waterproof design for dependable use around tanks and reservoirs
  • No calibration required for simple day-to-day operation
  • Auto sense on and off with no external switches or adjustable buttons
  • Long battery life with a minimum of 1 year under normal use

What Are Nutrients and Boosters?

Nutrients and boosters are products used to support plant growth, improve root development and maximise flowering potential. Base nutrients provide the essential elements plants need throughout their lifecycle, while additives and boosters are designed to support specific stages such as rooting, vegetative growth and bloom.

Indoor plants rely on a balanced feeding programme to achieve strong growth and healthy development. Choosing the correct nutrients for your growing method is one of the most important parts of any successful indoor growing setup.

Types of Plant Nutrients and Additives

There are several different types of nutrients and boosters available depending on your setup and the stage of growth:

  • Base Nutrients – provide the core nutrients plants need for everyday growth
  • Root Stimulators – support early root development and plant establishment
  • Veg Boosters – help encourage vigorous vegetative growth
  • Bloom Boosters – support flower development and final yields
  • Enzymes and beneficial products – help maintain a healthier root zone and nutrient uptake
  • pH and nutrient management products – help keep feeding solutions balanced and stable

Using the right combination of products can help plants perform more consistently throughout the growing cycle.

Why Nutrients Matter in Indoor Growing

Plants grown indoors depend on the grower to provide the nutrients they need. Without the right feed, plants can suffer from poor growth, weak roots and reduced yields.

  • Supports healthy root and leaf development
  • Helps plants maintain vigorous growth
  • Encourages stronger flowering and fruiting
  • Improves plant health and overall performance
  • Helps maximise the results of your indoor setup

Whether you are growing in soil, coco or a fully recirculating hydroponic system, nutrients play a major role in plant performance and final results.

Choosing the Right Nutrients for Your Growing Medium

Different growing media require different feeding approaches. Choosing nutrients that match your setup helps maintain balance and improve uptake.

  • Soil nutrients – designed for plants grown in traditional soil mixes
  • Coco nutrients – formulated for the unique properties of coco coir
  • Hydroponic nutrients – designed for use in water-based growing systems

If you are growing in coco, rockwool or soil, it is important to use nutrients suited to that medium. For growers using advanced systems, our range also supports NFT, DWC, flood and drain and drip irrigation systems.

Nutrients and Indoor Growing Setups

Nutrients work best as part of a complete indoor growing setup. For the best results, pair your feeding programme with the right equipment:

This combination helps create a stable environment where plants can absorb nutrients efficiently and grow to their full potential.

Helpful Guides for Nutrients and Feeding

If you want to learn more about feeding plants and managing nutrient levels, explore our guides:

These guides will help you understand nutrient programmes, feeding strategies and how to get the best results from your indoor growing setup.

Shop Nutrients and Boosters in the UK

At Acorn Horticulture, we stock a wide range of nutrients, bloom boosters, root stimulators and additives for indoor growers across the UK. Whether you need a complete feeding programme or specific products for flowering, rooting or nutrient management, our range is designed to support every stage of plant growth.

Browse our full range above to find the right nutrients and boosters for your setup.

FAQs

What nutrients do indoor plants need?

Indoor plants need a balanced mix of essential nutrients to support root growth, leaf development, flowering and overall health.

What is the difference between nutrients and boosters?

Base nutrients provide the essential daily feed, while boosters and additives are designed to support specific stages such as rooting, vegetative growth or flowering.

Do I need different nutrients for coco and hydroponics?

Yes, different growing media often require different nutrient formulations to achieve the best balance and uptake.

Why are pH and EC important when feeding plants?

pH and EC help you measure nutrient balance and solution strength, allowing plants to absorb feed more effectively.