Additives & Boosters

Hydroponic additives are supplements used alongside base nutrients to support plant health and improve overall growing conditions. They are designed to help plants absorb nutrients more efficiently, maintain a healthy root zone and cope better with environmental stress. read more... Unlike base feeds, hydroponic additives do not replace core nutrition. Instead, they help optimise how nutrients are delivered and used...
Show more

153 products

Showing 1 to 24 of 153 products

Showing 1 to 24 of 153 products
View
Moonshine 5L bloom additive
Moonshine Plant Biostimulant 5L
Sale price£190.00
OG plant additive
OG Rapid Flower & Hardener
Sale price£150.00
Grotek Monster Bloom 2.5kg bloom booster
Save £11.00
Rox bloom additive
Rox Flower Enhancer Bloom Additive
Sale price£78.99 Regular price£89.99
Grenade Black bloom boosterGrenade nutrients range
Grenade Black & Green Nutrients
Sale priceFrom £60.00
Choose options
Rock Nutrients Rock Resinator bloom additive – view 6Rock Nutrients Rock Resinator bloom additive – view 3
Rock Resinator Bloom Additive
Sale priceFrom £19.99
Choose options
Plant Magic MagneCal+ 5L calcium magnesium supplement
Plant magic MagneCal+ 5L
Sale price£60.00
Dutch Pro Amino Strength plant additiveDutch Pro Amino Strength 250ml
Dutch Pro Amino strength
Sale priceFrom £50.00
Choose options
Save £12.00
Hades Pro bloom additiveHades Pro bloom additive, view 2
Hades Pro Flower Booster
Sale price£47.99 Regular price£59.99
Choose options
Dutch Pro Silica silica supplementDutch Pro Silica 250ml
Dutch Pro Silica Silicon Supplement
Sale priceFrom £37.15
Choose options
Save £21.01
BioGreen Garlic natural pest repellentBioGreen Garlic 1L
BioGreen Garlic Organic Pest Treatment
Sale price£118.99 Regular price£140.00
Choose options
Dutch Pro Cal Mag calcium magnesium supplementDutch Pro CalMag 1L
Dutch Pro Cal Mag
Sale priceFrom £25.00
Choose options
Dutch Pro Take Root root stimulatorDutch Pro Take Root 250ml
Dutch Pro Take Root
Sale priceFrom £23.90
Choose options
Plagron Vita Start plant starter
Canna Mono 1L nutrient supplement
Dutch Pro Multi Total plant additiveDutch Pro Multi Total 250ml
Dutch Pro multi total
Sale priceFrom £15.00
Choose options

About Additives & Boosters

Hydroponic additives are supplements used alongside base nutrients to support plant health and improve overall growing conditions. They are designed to help plants absorb nutrients more efficiently, maintain a healthy root zone and cope better with environmental stress.

read more...

Unlike base feeds, hydroponic additives do not replace core nutrition. Instead, they help optimise how nutrients are delivered and used within a hydroponic system.

Why Use Hydroponic Additives?

  • To support nutrient uptake and availability
  • To help maintain healthy root systems
  • To reduce plant stress and deficiency risk
  • To improve stability of the nutrient solution
  • They are suitable for most hydroponic growing methods

Hydroponic Additives FAQs

What Are Hydroponic Additives?

Hydroponic additives are supporting products added to a nutrient solution to improve growing conditions rather than directly increase growth. They are commonly used to support roots, improve nutrient absorption or stabilise the growing environment.

Are Hydroponic Additives Necessary?

Hydroponic additives are not always essential, but many growers use them to improve consistency and plant health. When used correctly, they can help reduce common issues such as deficiencies or root stress.

Can Hydroponic Additives Be Used Throughout The Grow?

Yes, many additives are suitable for use across most or all stages of the plant lifecycle. However, usage depends on the product type and the needs of the crop.

Do Hydroponic Additives Replace Base Nutrients?

No, hydroponic additives are designed to complement base nutrients, not replace them. Plants still require a complete base feed to receive essential macro and micronutrients.

What Is The Difference Between Hydroponic Additives and Boosters?

Hydroponic additives and boosters are both supplements, but they serve different purposes and are used in different ways.

Hydroponic Additives

Additives are supportive products that help optimise plant health and growing conditions. They focus on improving how plants function rather than forcing growth.

  • The are used to support roots and nutrient uptake
  • They help prevent stress or deficiencies
  • They are often used at low levels throughout the grow
  • They are generally low risk when used correctly

Hydroponic Boosters

Boosters are designed to push a specific growth phase such as flowering or fruit production. They are more performance focused and are usually applied for short periods.

  • They are used to increase yield or flower development
  • They are applied during specific growth stages
  • They are short term use rather than continuous feeding
  • There is a higher risk of imbalance if overused

A simple way to think about the difference is that additives help create the right conditions for healthy growth, while boosters are used to push performance at specific times.

Tips for using hydroponic additives

  • Use additives at the recommended dosage
  • Introduce one product at a time where possible
  • Monitor pH and nutrient strength regularly
  • Avoid combining unnecessary supplements

Browse our range of hydroponic additives to find reliable support products for your hydroponic growing system.