Nutrients and additives have been used for years for growers of all types and variety of plant. Every plant you grow will need feeding at some point and there are a wide range of nutrients, boosters and additives available that you can use to provide the essential nutrients that your plants needs to grow and bloom to their best potential.
There is a huge choice in this area depending on which growing method you have chosen to use. There are many brands, and many conflicting opinions on what’s “best”. Our advice to you is keep trying different varieties till you find the one that works best for you.
Nutrients and additive with the most visible and immediate impact on your crops will be flowering boosters so if you are new to indoor growing then thats always a good place to start after choosing a base nutrient. As with everything we sell if you are unsure please call in and see us or call us on 0114 245 8581 for expert advice.

Showing 1–24 of 116 results

Show sidebar

Mills Start

£15.95£149.95 incl. Vat
This complex bio-stimulant nutrient additive is aimed for use during the seeding, growth and early bloom phases of your plants. START –R is made up of a highly available form of nitrogen and our unique combination of Bio-Stimulants, acting as a root stimulator while also enhancing plant vitality and abundant branching. In this way, your plants will get the boost they need in order to grow at their fullest potential from the beginning. START –R is immediately absorbed by the plant and it promotes proper development for the seedlings, rooted cuttings and young plants. It also comes in handy during plant transplant, as it helps the plant recover from the transplant shock. Here are just some of the wonders START-R could do for your plants:
  • help them develop strong roots quickly
  • promote plant growth and vitality
  • improve media structure
  • enhance nutrient uptake
  • help fast after-transplant shock recovery
  • provides vitality
  • improves yield
How to use? Use a 4ml/1 gallon during the entire growth stage and first two weeks of the bloom stage. START-R is definitely a help and a must have for any serious hydroponic growers who want to get the best out of their plants. Also, START-R is a no-fuss growth booster for your plants, since it can be used for hydroponics or any other growing medium type or watering method

PH Test Kit – Liquid 6 – 7.6

£2.50 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.

PH Test Kit – Liquid 4 – 10

£2.50 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.

Square Atami Pot – 18l

£3.50 incl. Vat
18Ltr Square Atami Pot

Canna Spanner

£4.00 incl. Vat
This is a handy spanner for opening 5 or 10 Litre nutrient drums. It is almost impossible to open your large Canna Nutrient Drums with out this handy spanner. Also opens other makes of nutrients eg IONIC

Growth Technology Liquid Silicon

£4.50£28.00 incl. Vat
Liquid Silicon is a very beneficial and often underated plant additive, Silicon is found in nearly all natural soils but not in hydroponic nutrient solutions. Silicons main effect is in strenghtening the plant walls producing stronger healthier specimens with large root zones and higher resistance to pests and diseases. Improves nutrient uptake and transport through the plant. Strengthens plant cell walls, so plants can better resist attacks from fungi and pests. Increases chlorophyll production leading to darker green leaves and improved light collection. Increases uptake of available CO2 and utilises the enhanced metabolic processes to deliver higher yields. Adds very useful extra potassium for enhanced flowering. Liquid Silicon usage: Liquid Silicon can be used with all growing mediums and techniques. Use Liquid Silicon from the moment plants have established in vegetative growth and use throughout your veg and flower phases. Add Liquid Silicon to your nutrient mix at a rate of 5ml per 10 litres of water. Liquid silicon will raise your pH level so put Silicon into your mix before your adjust and measure your pH.

Growth Technology Liquid Oxygen

£4.50£40.00 incl. Vat

A daily addition of Liquid Oxygen to the nutrient tank will invigorate the plant and increase nutrient uptake, leading to faster growth rates. In plants the extra oxygen provided will massively stimulate protein production at the cellular level. This will greatly enhance the photosynthetic process, leading to bushier plants with larger leaves, thicker stems and shorter internodes. Plants will be stronger and leaves will be darker, thus collecting light with greater efficiency and further improving photosynthetic response.

PH Test Kit – Hydrogarden

£5.00 incl. Vat
Essentials pH Test Kit - Wide Spectrum Find out your pH level with this easy test kit Our Essentials pH test kit is good for 150 tests. At the rate of 3 tests per week it will last one year, making it excellent value for money.

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.

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 pH Buffer 4 – 300ml

£5.00 incl. Vat
Solutions of a known and fixed pH. Used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter.

Growth Technology pH Buffer 7 – 300ml

£5.00 incl. Vat
Solutions of a known and fixed pH. Used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter.

Vitalink PlantStart

£5.00£12.00 incl. Vat

VitaLink PlantStart

 VitaLink PlantStart is the ideal propagation nutrient and has been developed to help young plants grow well. It contains a key ratio of boron and calcium which is scientifically proven to promote fast and healthy early growth. This seedling feed contains everything cuttings and seedlings require for fast and healthy rooting during this crucial stage of plant growth.

Key Features:

  • Promotes fast and healthy root development
  • Proven to significantly reduce standard rooting times
  • Boosts resistance to infection and disease
  • Increases your chance of success at this difficult and crucial stage
  • Provides the basis for overall healthy plants

Dosage:

Pre-soaking propagation = 3-4ml/L.

Seedlings/rooted cuttings = 6-8ml/L.

Canna PK 13/14

£5.50£49.00 incl. Vat
If you want the biggest fruits and flowers, CANNA PK 13/14 is the right product for you. CANNA PK 13/14 is a mixture of top quality nutritional minerals that stimulate flowering. It's easy to use and makes for high yields. PK 13/14 is suitable for any growing medium. Furthermore, it only needs to be applied one week only to the nutrient reservoir. If you do this at the right moment, you will get astonishing results!

Pure elements to stimulate flowering

CANNA PK 13/14 is a high grade mixture of phosphorus and potassium that is added during the flowering phase. Both elements play a big role during the generative phase of plants. Thanks to a special production process CANNA has succeeded in combining pure phosphorous and potassium in very high concentrations. This makes PK 13/14 available to the plant quickly and directly.

Phosphorous (P) is a macro nutritional element for every plant. It plays a key role in metabolism and energy transfer. In the flowering phase, extra phosphorous is needed. Phosphorous strengthens cell formation in flowers, among other things.

Potassium (K) is also a macro nutritional element. It is found throughout the plant and is necessary for a lot of its activities. It is essential for transporting water and nutrition (sieve vessels) and it is responsible for the plant’s quality and rigidity. In addition to this, it controls countless other processes such as sugar production. Potassium ensures that the plant can produce enough sugars during flowering, which are essential for the development of the flowers.

Perfect combination with CANNABOOST

There comes a moment during the plant’s development when the need for phosphorous and potassium increases greatly. If CANNA PK 13/14 is given at this moment you will satisfy the flowering plant’s increased needs and the fruits will achieve maximum development. CANNABOOST enhances the metabolism and has a strengthening effect on PK 13/14. This perfect combination will cause the plant to flower more lavishly.

Suitable for every medium

PK 13/14 is used with every medium and consequently it is used for cultivation on soil, in recirculating systems, when cultivating on coco and in run-to-waste systems. PK 13/14 is suitable for use when cultivating both indoors and outdoors.

BioBizz Bio-Grow

£5.50£30.00 incl. Vat
BioGrow is a growth liquid fertilizer applicable to most types of soil and substrate mixtures. Bio-Grow activates the substrates’ bacterial flora due to its base of 100% Dutch organic sugar beet extract, commonly known as molasses. Due to the molasses high betaine content it helps activate soil micro activity through a process of organic facilitation.
 
Bio-Grow contains 70 trace elements and vitamins B1, B2, C, and E. As with all Biobizz Products, it has a low phosphate content, which is
considered harmful for animals and the environment.
 
Bio-Grow is a complete stand-alone fertilizer. As soon as the first leafs appear it is recommended to feed Bio-Grow and to continue to feed it through the fruiting/flowering stage until the end production.
 
A large crop of very sweet fruit is assured thanks to its content of natural sugars and potassium which also provide an ideal interrelation with bacteria in the soil mixture.
 
Nitrogen (N) 8.0% Ammoniac (NH4) 4.0% Nitrate (NO3) 4.0%
Phosphorous (P2O5) 2.0% Potassium (K2O) 6.0%

Ecothrive Charge Soil Conditioner and Biostimulant

£5.95£29.95 incl. Vat

Charge is a 100% naturally-produced potting soil enhancer that offers a wide range of biological benefits to your plants. Charge boosts and prolongs the fertility of your potting mix by adding a balance of long-lasting primary nutrients in a highly available form. Composed entirely from the droppings of beetles, this premium grade poop is packed full of beneficial microorganisms and natural plant growth catalysts. Charge will stimulate robust plant growth, improve root zone conditions and create vigorous high yielding plants. It’s also certified for use in growing organic crops by the Soil Association.

  • Contains a well-balanced proportion of nitrogen, phosphorus and potassium with good availability and long-term supply.
  • Promotes a healthy biological presence in the growing media, improving nutrient cycling and availability as well as improved root growth.
  • Contains naturally occurring activators of plants’ immune response, elevating defence against bacterial and fungal diseases.
  • Easy to apply thanks to user-friendly sandy texture.
  • 100% Organic – Approved by the Soil Association.

Vitalink Buddy

£6.00£48.00 incl. Vat

VitaLink Buddy

VitaLink Buddy is a PK additive rich in potassium and phosphorus with added Magnesium and Sulphur to support the extra K and P which primarily supports the quality of the plant but also encourages maximum yield from plants i.e. growing bigger buds, producing more fruit and flowers. During the flowering process, an increase in the potassium to nitrogen ratio speeds up the reproductive processes and encourages plants to use more energy on their flowers or fruits leading to an increased yield.

Key Features:

  • Supports quality of the plant
  • Boosts yield
  • Improves flowering and fruiting quality
  • Enhances plant health
  • Faster, better results
  • Low concentrated PK solution – Buddy can be used throughout a longer period; from bloom week 3 until bloom week 8

Dosage:

1ml/1L

Vitalink Finale

£6.00£12.50 incl. Vat

VitaLink Finale

The VitaLink Finale additive is a finishing product for the last week or two before harvesting. It helps to ripen the plant and bring any underdeveloped crops to the same quality as the rest of the flowers or fruits at the same time.

Key Features:

  • Helps crops ripen together
  • High quality end product
  • Flushes any excess nutrients from the crop
  • Maximum yield

Dosage:

3-4ml/1L

BioBizz Bio-Bloom

£6.00£36.00 incl. Vat
Bio-Bloom is a complete liquid organic fertilizer which contains a small amount of nitrogen and enough phosphorous and potassium to ensure exuberant fruiting/flowering. Trace elements and hormones of vegetable origin are also added to improve the plant process itself.
 
Furthermore, Bio-Bloom contains enzymes and amino acids, which work in harmony with the soil to promote fruit and flowering production. Bio-Bloom for soil, soil less, or fortified coco is therefore, a complete fertilizer used from the beginning of a fruiting/flowering phase till the end of production.
 
Nitrogen (N) 2.0% Ammoniac (NH4) 0.9% Nitrate (NO3)
1.1% Phosphorous (P2O5) 6.0% Potassium (K2O) 3.5%

Canna Flush

£6.50£12.00 incl. Vat

CANNA FLUSH

CANNA FLUSH is a product to clean substrates and plants from any excess nutrients. This is necessary, because excess nutrients can have a bad influence your next growth cycle. They could lead to over-fertilisation or malnutrition, for example.

Why should you use CANNA FLUSH?

  • When used just before harvest it makes sure the plant gets rid of all excess, which will lead to a clean and tasteful harvest.
  • CANNA FLUSH effectively cleans the substrate without killing any useful bacteria or beneficial fungi, as can be the case when you use reverse osmosis or de-mineralised water.
  • It can be used on all substrates.
  • CANNA FLUSH is recyclable.

Growers Ark Boost It

£11.00£42.00 incl. Vat

Growers Ark Boost it is a PK boost with low levels of nitrogen.

As with all PK boosts it is designed to give plants an extra boost of potassium and phosphorus during the flowering/fruiting stage of the life cycle.” Boost It” is an additive and as such is designed to complement your feeding regime not replace it. It can be used with most plant foods but will give best results when used with Growers Ark feeds.

GHE Ripen

£6.50£29.00 incl. Vat

Ripen is a late flowering solution that is also known as a 'forcing solution' in the greenhouse industry. Will give you enhanced flowering size and yield.

Ripen acts at different levels: - It gives the plant a strong signal that it is coming to the end of its life. The plant reacts by speeding the ripening process, in a last effort to spread its genes. - It brings to the plants all the mineral salts they need in a form easy to assimilate. - In case of a previous accumulation of nitrate or microelements, it helps metabolise these residues, which will improve the taste of the crop. - In case of a severe infestation of fungi or insects, it allows you to accelerate the natural cycle and get something out of a crop otherwise completely lost.

Halo

£7.50£27.50 incl. Vat

HALO heralds a new technology in plant stimulants and health!

HALO is the first product of an entirely new class of plant growth additives utilising the Harpin Alpha Beta protein, a powerful new plant technology. HALO is foliar applied or used as a seed or tuba pre-treatment. HALO’s unique natural protein leads the plant to believe it is under attack, this ‘tricks’ the plant and naturally forces the plant to ‘defend itself’ turning on stress-defence and growth systems and reproducing very rapidly. If a plant ‘believes’ it is under attack, it will grow and reproduce at rapid rates as a means of ensuring it’s survival. This results in a healthier and more productive plant with an increase in crop vigor, stamina, nutrient uptake and reproductive growth (depending on time of application).