Estimated delivery between September 19 and September 21.
A highly concentrated organic root and growth stimulator that supports vigorous root development, vegetative growth and beneficial microbial activity at just 2.5ml per 10L.
Aptus Startbooster is a 100% biological root and vegetative growth stimulator developed to help plants establish a strong foundation before flowering. Its concentrated formulation combines organic nitrogen chelated with L-amino acids, beneficial microlife biomass, humic acid and high-grade fulvic acid.
Startbooster works both with the plant and around its root zone. It encourages root and root-hair development while supporting stems and vegetative plant tissue, helping crops establish the structure needed for productive later growth.
Its L-amino acids provide organic nitrogen and biostimulation while supporting beneficial bacterial populations. The microlife biomass helps break down nutrients within the growing medium, while humic acid contributes to water retention, root-zone conditioning and nutrient exchange.
Startbooster is exceptionally concentrated. The standard Aptus application rate is only 2.5ml per 10 litres of water, giving the 500ml bottle enough concentrate to prepare approximately 2,000 litres of nutrient solution.
Why choose Aptus Startbooster?
Powerful root & growth stimulator – designed to encourage root development and vigorous vegetative growth.
100% biological formulation – contains active organic ingredients rather than functioning as another mineral base fertiliser.
Supports root-hair development – helps plants establish a more active root system during early development.
Supports stems & plant tissue – formulated to encourage strong vegetative structure as plants establish.
Beneficial microlife biomass – supports microbial populations and nutrient breakdown around the root zone.
Humic acid from Leonardite – supports water retention, root-zone conditioning and cation and anion exchange.
High-grade fulvic acid – included as part of the concentrated biological formulation.
Highly concentrated – the standard rate is only 2.5ml per 10L.
Excellent coverage – a 500ml bottle treats approximately 2,000L at the standard application rate.
What is Aptus Startbooster suitable for?
Startbooster is primarily designed for propagation, establishment and vegetative development, when building a healthy root system and strong plant structure is a priority.
During normal crop feeding, use Startbooster throughout vegetative growth alongside an appropriate NPK fertiliser. The Aptus UK feeding programme then carries Startbooster into early flowering for the first watering only, after which it is withdrawn as the crop moves further into flowering.
Startbooster also has dedicated applications for new clones and transplant establishment. These use different concentrations from the normal reservoir rate, allowing the same product to support crops from propagation through established vegetative development.
It can be incorporated into the wider Aptus feeding programme or used alongside another suitable liquid NPK base fertiliser. On pre-fertilised growing media, Aptus also allows Startbooster to be used without an additional vegetative fertiliser where the medium already supplies sufficient base nutrition.
How to use Aptus Startbooster
For normal feeding, use 2.5ml of Startbooster per 10 litres of water, equivalent to 0.25ml/L or a 1:4000 dilution. Use throughout vegetative development and for the first watering as the crop enters early flowering.
For 10L of nutrient solution, use 2.5ml. For 50L, use 12.5ml. For 100L, use 25ml. For a 500L reservoir, use 125ml. For 1,000L, use 250ml.
At the standard 0.25ml/L rate, a 500ml bottle prepares approximately 2,000 litres of nutrient solution.
When preparing the nutrient solution, add the base NPK fertiliser first and measure the EC. Add Startbooster afterwards and mix thoroughly.
For new clones, Aptus recommends a separate dilution of 1ml per litre of water. This is a propagation-specific rate and should not be confused with the standard 0.25ml/L feeding rate.
During transplanting, Aptus recommends dipping the roots in a solution containing 10ml per litre of water. This stronger concentration is specifically for the root-dip treatment rather than routine reservoir feeding.
Startbooster is an organic product. Do not leave mixed Startbooster in a reservoir for longer than 2 – 3 days, as biological activity can contribute to organic biofilm and irrigation-line blockages.
When applying Startbooster through drip irrigation, use Aptus System-Clean alongside it to help keep drippers and irrigation lines clear.
Do not leave mixed Startbooster in the reservoir for longer than 2 – 3 days
Drip irrigation
Use alongside Aptus System-Clean to help manage organic biofilm & blocked irrigation lines
Aptus Startbooster FAQs
What is Aptus Startbooster?
Aptus Startbooster is a highly concentrated biological root and vegetative growth stimulator. It is designed to encourage root development, root hairs, vegetative growth and beneficial microbial activity around the root zone.
Is Aptus Startbooster organic?
Aptus describes Startbooster as a 100% biological product containing active organic ingredients.
What is in Aptus Startbooster?
Startbooster contains organic nitrogen chelated with L-amino acids, microlife biomass produced through controlled fermentation of selected beneficial strains, humic acid from Leonardite and high-grade fulvic acid.
What does Aptus Startbooster do?
Startbooster supports root and root-hair development, stems and vegetative plant tissue while encouraging beneficial microbial activity around the root zone.
How much Aptus Startbooster should I use?
For normal feeding, use 2.5ml of Startbooster per 10 litres of water. This is equivalent to 0.25ml/L or a 1:4000 dilution.
How much Startbooster do I need for 50 litres?
Use 12.5ml of Startbooster for 50 litres of nutrient solution at the standard application rate.
How much Startbooster do I need for 100 litres?
Use 25ml of Startbooster for a 100L reservoir.
How much Startbooster do I need for a 500L reservoir?
Use 125ml of Startbooster for a 500L reservoir at the standard 0.25ml/L rate.
How much Startbooster do I need for a 1,000L reservoir?
Use 250ml of Startbooster for a 1,000L reservoir at the standard application rate.
How much nutrient solution will 500ml of Aptus Startbooster make?
At the standard 0.25ml/L application rate, a 500ml bottle treats approximately 2,000 litres of nutrient solution.
When should I use Aptus Startbooster?
Use Startbooster during establishment and vegetative development. Under the Aptus UK programme, it is also used for the first watering during early flowering before being withdrawn as the crop progresses into active flowering.
Can Aptus Startbooster be used for clones?
Yes. Aptus recommends a separate 1:1000 dilution for feeding new clones, equivalent to 1ml of Startbooster per litre of water.
Can I use Startbooster when transplanting?
Yes. Aptus recommends dipping the roots in a 1:100 solution when transplanting, equivalent to 10ml of Startbooster per litre of water.
Is Aptus Startbooster a base nutrient?
No. Startbooster is a root and growth biostimulant. For normal crop feeding it is used alongside an appropriate NPK base fertiliser.
Can Startbooster be used with another brand of base nutrient?
Yes. The Aptus UK programme permits the use of another suitable liquid NPK base fertiliser, so Startbooster does not depend on Aptus All-in-One Liquid being used as the base feed.
Can Startbooster be used with pre-fertilised soil?
Yes. Aptus states that on pre-fertilised soil, Startbooster can be used without an additional vegetative fertiliser where the growing medium already provides sufficient base nutrition.
When should Startbooster be added to the nutrient solution?
Add the NPK nutrients first and measure the EC. Add Startbooster afterwards and mix the nutrient solution thoroughly.
Can Aptus Startbooster be used in drip irrigation?
Yes, but Startbooster is organic and can increase the risk of organic build-up in drip systems. Aptus therefore instructs growers to use System-Clean alongside Startbooster in drip irrigation systems.
How long can mixed Startbooster stay in a reservoir?
Aptus recommends keeping Startbooster in a mixed reservoir for no longer than 2 – 3 days to reduce organic biofilm build-up and the risk of blocked irrigation lines.
What is the difference between Aptus Startbooster and Topbooster?
Startbooster is the Aptus root and vegetative growth stimulator, while Topbooster is the bloom and maturation stimulator used during flowering. They perform different roles at different stages of crop development.
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A highly concentrated organic root and growth stimulator that supports vigorous root development, vegetative growth and beneficial microbial activity at just 2.5ml per 10L.
Aptus Startbooster is a 100% biological root and vegetative growth stimulator developed to help plants establish a strong foundation before flowering. Its concentrated formulation combines organic nitrogen chelated with L-amino acids, beneficial microlife biomass, humic acid and high-grade fulvic acid.
Startbooster works both with the plant and around its root zone. It encourages root and root-hair development while supporting stems and vegetative plant tissue, helping crops establish the structure needed for productive later growth.
Its L-amino acids provide organic nitrogen and biostimulation while supporting beneficial bacterial populations. The microlife biomass helps break down nutrients within the growing medium, while humic acid contributes to water retention, root-zone conditioning and nutrient exchange.
Startbooster is exceptionally concentrated. The standard Aptus application rate is only 2.5ml per 10 litres of water, giving the 500ml bottle enough concentrate to prepare approximately 2,000 litres of nutrient solution.
Why choose Aptus Startbooster?
Powerful root & growth stimulator – designed to encourage root development and vigorous vegetative growth.
100% biological formulation – contains active organic ingredients rather than functioning as another mineral base fertiliser.
Supports root-hair development – helps plants establish a more active root system during early development.
Supports stems & plant tissue – formulated to encourage strong vegetative structure as plants establish.
Beneficial microlife biomass – supports microbial populations and nutrient breakdown around the root zone.
Humic acid from Leonardite – supports water retention, root-zone conditioning and cation and anion exchange.
High-grade fulvic acid – included as part of the concentrated biological formulation.
Highly concentrated – the standard rate is only 2.5ml per 10L.
Excellent coverage – a 500ml bottle treats approximately 2,000L at the standard application rate.
What is Aptus Startbooster suitable for?
Startbooster is primarily designed for propagation, establishment and vegetative development, when building a healthy root system and strong plant structure is a priority.
During normal crop feeding, use Startbooster throughout vegetative growth alongside an appropriate NPK fertiliser. The Aptus UK feeding programme then carries Startbooster into early flowering for the first watering only, after which it is withdrawn as the crop moves further into flowering.
Startbooster also has dedicated applications for new clones and transplant establishment. These use different concentrations from the normal reservoir rate, allowing the same product to support crops from propagation through established vegetative development.
It can be incorporated into the wider Aptus feeding programme or used alongside another suitable liquid NPK base fertiliser. On pre-fertilised growing media, Aptus also allows Startbooster to be used without an additional vegetative fertiliser where the medium already supplies sufficient base nutrition.
How to use Aptus Startbooster
For normal feeding, use 2.5ml of Startbooster per 10 litres of water, equivalent to 0.25ml/L or a 1:4000 dilution. Use throughout vegetative development and for the first watering as the crop enters early flowering.
For 10L of nutrient solution, use 2.5ml. For 50L, use 12.5ml. For 100L, use 25ml. For a 500L reservoir, use 125ml. For 1,000L, use 250ml.
At the standard 0.25ml/L rate, a 500ml bottle prepares approximately 2,000 litres of nutrient solution.
When preparing the nutrient solution, add the base NPK fertiliser first and measure the EC. Add Startbooster afterwards and mix thoroughly.
For new clones, Aptus recommends a separate dilution of 1ml per litre of water. This is a propagation-specific rate and should not be confused with the standard 0.25ml/L feeding rate.
During transplanting, Aptus recommends dipping the roots in a solution containing 10ml per litre of water. This stronger concentration is specifically for the root-dip treatment rather than routine reservoir feeding.
Startbooster is an organic product. Do not leave mixed Startbooster in a reservoir for longer than 2 – 3 days, as biological activity can contribute to organic biofilm and irrigation-line blockages.
When applying Startbooster through drip irrigation, use Aptus System-Clean alongside it to help keep drippers and irrigation lines clear.
Do not leave mixed Startbooster in the reservoir for longer than 2 – 3 days
Drip irrigation
Use alongside Aptus System-Clean to help manage organic biofilm & blocked irrigation lines
Aptus Startbooster FAQs
What is Aptus Startbooster?
Aptus Startbooster is a highly concentrated biological root and vegetative growth stimulator. It is designed to encourage root development, root hairs, vegetative growth and beneficial microbial activity around the root zone.
Is Aptus Startbooster organic?
Aptus describes Startbooster as a 100% biological product containing active organic ingredients.
What is in Aptus Startbooster?
Startbooster contains organic nitrogen chelated with L-amino acids, microlife biomass produced through controlled fermentation of selected beneficial strains, humic acid from Leonardite and high-grade fulvic acid.
What does Aptus Startbooster do?
Startbooster supports root and root-hair development, stems and vegetative plant tissue while encouraging beneficial microbial activity around the root zone.
How much Aptus Startbooster should I use?
For normal feeding, use 2.5ml of Startbooster per 10 litres of water. This is equivalent to 0.25ml/L or a 1:4000 dilution.
How much Startbooster do I need for 50 litres?
Use 12.5ml of Startbooster for 50 litres of nutrient solution at the standard application rate.
How much Startbooster do I need for 100 litres?
Use 25ml of Startbooster for a 100L reservoir.
How much Startbooster do I need for a 500L reservoir?
Use 125ml of Startbooster for a 500L reservoir at the standard 0.25ml/L rate.
How much Startbooster do I need for a 1,000L reservoir?
Use 250ml of Startbooster for a 1,000L reservoir at the standard application rate.
How much nutrient solution will 500ml of Aptus Startbooster make?
At the standard 0.25ml/L application rate, a 500ml bottle treats approximately 2,000 litres of nutrient solution.
When should I use Aptus Startbooster?
Use Startbooster during establishment and vegetative development. Under the Aptus UK programme, it is also used for the first watering during early flowering before being withdrawn as the crop progresses into active flowering.
Can Aptus Startbooster be used for clones?
Yes. Aptus recommends a separate 1:1000 dilution for feeding new clones, equivalent to 1ml of Startbooster per litre of water.
Can I use Startbooster when transplanting?
Yes. Aptus recommends dipping the roots in a 1:100 solution when transplanting, equivalent to 10ml of Startbooster per litre of water.
Is Aptus Startbooster a base nutrient?
No. Startbooster is a root and growth biostimulant. For normal crop feeding it is used alongside an appropriate NPK base fertiliser.
Can Startbooster be used with another brand of base nutrient?
Yes. The Aptus UK programme permits the use of another suitable liquid NPK base fertiliser, so Startbooster does not depend on Aptus All-in-One Liquid being used as the base feed.
Can Startbooster be used with pre-fertilised soil?
Yes. Aptus states that on pre-fertilised soil, Startbooster can be used without an additional vegetative fertiliser where the growing medium already provides sufficient base nutrition.
When should Startbooster be added to the nutrient solution?
Add the NPK nutrients first and measure the EC. Add Startbooster afterwards and mix the nutrient solution thoroughly.
Can Aptus Startbooster be used in drip irrigation?
Yes, but Startbooster is organic and can increase the risk of organic build-up in drip systems. Aptus therefore instructs growers to use System-Clean alongside Startbooster in drip irrigation systems.
How long can mixed Startbooster stay in a reservoir?
Aptus recommends keeping Startbooster in a mixed reservoir for no longer than 2 – 3 days to reduce organic biofilm build-up and the risk of blocked irrigation lines.
What is the difference between Aptus Startbooster and Topbooster?
Startbooster is the Aptus root and vegetative growth stimulator, while Topbooster is the bloom and maturation stimulator used during flowering. They perform different roles at different stages of crop development.
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