liquid pH test kit

Classic liquid pH testing

Fast, reliable, accurate pH testing without batteries

Our liquid pH tester is perfect for easy testing and as a backup to your digital meter. Covering a wide range, from 4.0 to 8.5, our kit gives up to 1000 tests with 60 mL.

Simply fill the supplied test tube halfway with nutrient solution, add two drops of pH Test Indicator, shake and compare the resulting colour with the chart to read your pH level.

 pH Regulators Premium pH management There is no such thing as an ideal pH. High values help cation uptake and low values help anion uptake: every fixed pH is a compromise. The usual safe range recommendation is from 5.5 to 6.5. Our advice is to stay on the low side: from 5.5 to 6.2. GHE pH Down:  Premium pH management and buffering for hydroponics, coco and soil. Not just a simple acid: GHE pH Down makes a real contribution to nutrient solution stability To make GHE pH Down we carefully blend three acids commonly used alone in hydroponics to give you all the benefits of each - without the disadvantages. GHE pH Down uses nitric and phosphoric acids to do the initial heavy lifting of altering your water pH, and the blend of both means no disturbance to your N/K ratios throughout grow and bloom - and no residue on the surface of your tank from using phosphoric alone in hard water areas. Then, with its own special characteristics, organic citric acid takes over to buffer pH changes over time, keeping your nutrient solution more stable, and helping handle calcium excesses in hard water areas.

Seaweed® (formerly G.O. Seaweed) 100% cold pressed seaweed extract Powerful pre-flowering activator, from  the purest source on the planet TA  Seaweed® is a 100% natural plant and soil vitality enhancer that encourages prolific root and foliage growth as well an increase in flowering sites, and larger flowers and fruits. Seaweed will promote vigorous, healthy growth in synergy with any feeding regime, in soil, Coco or hydroponics. Marine plants of many types have long been recognised as powerful plant boosters and stress relieving agents, but one species, Ascophyllum nodosum, stands out as the most effective. And so, to deliver as many active elements as possible in TA Seaweed®, including high quality organic nitrogen, we cold-press Ascophyllum from the purest waters on the planet, and add nothing else.

8-Pack- Classic “plug n play” 8-bucket system The WaterFarm 8-pack is eight WaterFarm module units connected to one General Hydroponics Controller- an integrated 13 gallon reservoir and an 8 gallon controller unit. The controller will keep each unit topped off with the correct level of nutrient for low maintenance. The WaterFarm 8-Pack is powered by GH’s Dual Diaphragm Air Pump and includes necessary hardware and Flora Series nutrients. The grower can arrange the WaterFarm units in a design that is suitable for any environment. Pack them tight or space them out for your growing situation. The WaterFarm 8-Pack is the system for big growers. Clay pebbles not included. You’ll need about 70 liters of hydroton/clay pebbles to fill a WaterFarm 8-Pack. This complete system includes: 8-WaterFarm modules 8-gallon controller 13-gallon reservoir Blue tubing & fittings Air line & fittings Dual diaphragm air pump 3-part Flora Kit Circulating Upgrade Kit Have an older WaterFarm 8-pack? This kit contains everything needed to reconfigure a WaterFarm 8-Pack and add nutrient circulation capability to a unit manufactured prior to 2009. This promotes even growth and more consistent results overall.

GHE The AquaFarm® & WaterFarm® easy to use hydroponics for everyone The ORIGINAL home hydroponics unit. Often copied, never equalled. Invented more than 30 years ago in California by GH USA founder Lawrence Brooke, and still GHE’s best-selling home hydroponic system today, the Aquafarm®, and smaller format Waterfarm, have grown hundreds of thousands of healthy, happy and often huge plants around the world. The Aquafarm® owes its longevity and success to the mix of performance and ease of use that the system offers. Quick to set up in any space from greenhouses to kitchens and balconies, Aquafarms® and Waterfarms® can be used to grow decorative and culinary plants of all sizes, from basil and other herbs to small trees. Both systems work by using air to draw nutrient solution up from the reservoir, and dripping it back down through the clay pebble substrate and roots. This simple, reliable design is incredibly effective at delivering perfectly oxygenated nutrient solution to plants - exactly what’s needed for optimal growth and flowering, and two-part construction offers easy reservoir and root access, which can be difficult or impossible in many systems. Now in version 3, boasting a range of improvements to component design, the AquaFarm® and WaterFarm® are: • Roto-moulded in France from super tough and durable recycled plastic • Versatile, adaptable and expandable • UV and light shielded for root protection • Very low electricity consumption: less than 2w

The T.A. Rainforest Motor 12 Volts (GHE) is a high-performance motor designed for optimal efficiency and durability. With a powerful 12-volt capacity, it provides reliable and consistent power for a variety of applications. Experience the benefits of seamless performance and long-lasting reliability with this expertly crafted motor.

Pro Organic (formerly G.O. Thrive) organic range two part plant food Highly concentrated, fully organic, 2-part liquid nutrient. The first and only complete certified organic nutrient for all substrates. With a pedigree dating back to 2004, General Organics Thrive has been in commercial use around the world for years, including by our partners Les Sourciers. General Organics Thrive is a practical and incredibly effective way to feed your plants organically, for hobby growers and professionals alike. The General Organics: Thrive formulas are specifically designed to meet the needs of all plants throughout growth, flowering and fruiting. We base our formulations on ecological principles that maintain respect for the environment whilst providing plants with balanced, effective nutrition. Thrive actively improves the root environment by feeding microbes that live in harmony with your plant. This provides the essential nutrition and environment to deliver healthy vegetative growth, flowering and fruiting. Thrive is ideal for every type of plant and will work wonders as a standalone product: when we say “complete” we mean it: you don’t need additional elements for a successful, bountiful grow, in most water.

GHE The AquaFarm® & WaterFarm® easy to use hydroponics for everyone The ORIGINAL home hydroponics unit. Often copied, never equalled. Invented more than 30 years ago in California by GH USA founder Lawrence Brooke, and still GHE’s best-selling home hydroponic system today, the Aquafarm®, and smaller format Waterfarm, have grown hundreds of thousands of healthy, happy and often huge plants around the world. The Aquafarm® owes its longevity and success to the mix of performance and ease of use that the system offers. Quick to set up in any space from greenhouses to kitchens and balconies, Aquafarms® and Waterfarms® can be used to grow decorative and culinary plants of all sizes, from basil and other herbs to small trees. Both systems work by using air to draw nutrient solution up from the reservoir, and dripping it back down through the clay pebble substrate and roots. This simple, reliable design is incredibly effective at delivering perfectly oxygenated nutrient solution to plants - exactly what’s needed for optimal growth and flowering, and two-part construction offers easy reservoir and root access, which can be difficult or impossible in many systems. Now in version 3, boasting a range of improvements to component design, the AquaFarm® and WaterFarm® are: • Roto-moulded in France from super tough and durable recycled plastic • Versatile, adaptable and expandable • UV and light shielded for root protection • Very low electricity consumption: less than 2w

TrikoLogic S® ultimate root zone protection Professional quality Trichoderma with added hot weather protection. The ultimate in biological root zone protection and health GHE Trikologic S adds hot weather protection from Streptomyces negrecens to our standard biologicalprotection for your grow. On top of the growth boost and protection offered by Trichoderma, Streptomyces coats roots with a protective mycelium that physically prevents fusarium and pythium spores from infecting them. Trikologic S delivers all the benefits of additional nutrition and stimulation that standard Trikologic provides, but it also gives you what is genuinely the only reliable natural way of protecting your grow from root pathogens in hot and difficult conditions: well chosen, professional quality mycorrhizae.

TrikoLogic S® ultimate root zone protection Professional quality Trichoderma with added hot weather protection. The ultimate in biological root zone protection and health GHE Trikologic S adds hot weather protection from Streptomyces negrecens to our standard biologicalprotection for your grow. On top of the growth boost and protection offered by Trichoderma, Streptomyces coats roots with a protective mycelium that physically prevents fusarium and pythium spores from infecting them. Trikologic S delivers all the benefits of additional nutrition and stimulation that standard Trikologic provides, but it also gives you what is genuinely the only reliable natural way of protecting your grow from root pathogens in hot and difficult conditions: well chosen, professional quality mycorrhizae.

TrikoLogic S® ultimate root zone protection Professional quality Trichoderma with added hot weather protection. The ultimate in biological root zone protection and health GHE Trikologic S adds hot weather protection from Streptomyces negrecens to our standard biologicalprotection for your grow. On top of the growth boost and protection offered by Trichoderma, Streptomyces coats roots with a protective mycelium that physically prevents fusarium and pythium spores from infecting them. Trikologic S delivers all the benefits of additional nutrition and stimulation that standard Trikologic provides, but it also gives you what is genuinely the only reliable natural way of protecting your grow from root pathogens in hot and difficult conditions: well chosen, professional quality mycorrhizae.

TrikoLogic® vital for organic growing High quality dry Trichoderma harzianum culture. Vital for Organic growing, and every commercial gardener’s secret weapon. Trichoderma breaks down organic matter in substrates releasing the minerals that plants feed on. This process of decomposition and nutrient release is fundamental to organic and bioponic gardening. On top of this benefit, as it establishes colonies, Trichoderma releases a range of plant growth stimulating compounds and substances that inhibit or kill pathogens in the soil which might otherwise harm your plants. As with all GHE products, our Trichoderma brand is of the highest quality - all strains and cultures are not equal, and some are significantly less viable than others.

StreptoLogic®

Root protection against pathogens is a critical issue for all growers, whether in soil or hydroponics. Given the infinite care that growers take in the development of root systems, it is only natural that they want to protect their investment. Pythium, Fusarium, Verticillium and other bacterial and fungal pathogens can do irreparable damage to hydroponic systems, especially in hot weather, when warm air fosters the spread of moulds and damage can appear overnight.

There are “solutions” on the market such as UV sterilizers and fungicides available in garden centres, but all of these alternatives have drawbacks: cost, complexity of use, questionable results, toxicity of fungicides for humans and the environment.

StreptoLogic is easy to use and less expensive. It does not require a biofilter since the bacteria attach themselves directly to the roots.

It is a biostimulant that will use nature’s resources to produce phytohormones, fix iron and stimulate the root system. It will also make the plant more resistant to attacks by fungi and pathogenic bacteria that proliferate more quickly in hot weather.

StreptoLogic is suitable for use in organic farming according to EU regulation 2018\848 2021 1165.

BOOSTERS the industry standard in boosters Through our research on organic stimulators we have found an extraordinary line of products that we are proud to include in our range. The Terra Aquatica Pro Roots, Pro Bloom and Protect were developed by independent researchers, and our tests, as well as those conducted by several of our clients, were dazzling! Conformed to European regulation CE N° 834/2007 on organic agriculture, manufactured naturally and totally biodegradable. Protect (formerly G.H. Protect) concentrated plant protection TA Protect strengthens a plant’s  immune system repelling insects by increasing the production of alkaloidal repulsive saps in the leaves and flowers. Apply as a foliar spray up to early  flowering. Fully organic. 

BOOSTERS the industry standard in boosters Through our research on organic stimulators we have found an extraordinary line of products that we are proud to include in our range. The Terra Aquatica Pro Roots, Pro Bloom and Protect were developed by independent researchers, and our tests, as well as those conducted by several of our clients, were dazzling! Conformed to European regulation CE N° 834/2007 on organic agriculture, manufactured naturally and totally biodegradable. Protect (formerly G.H. Protect) concentrated plant protection TA Protect strengthens a plant’s  immune system repelling insects by increasing the production of alkaloidal repulsive saps in the leaves and flowers. Apply as a foliar spray up to early  flowering. Fully organic. 

BOOSTERS the industry standard in boosters Through our research on organic stimulators we have found an extraordinary line of products that we are proud to include in our range. The Terra Aquatica Pro Roots, Pro Bloom and Protect were developed by independent researchers, and our tests, as well as those conducted by several of our clients, were dazzling! Conformed to European regulation CE N° 834/2007 on organic agriculture, manufactured naturally and totally biodegradable. Protect (formerly G.H. Protect) concentrated plant protection TA Protect strengthens a plant’s  immune system repelling insects by increasing the production of alkaloidal repulsive saps in the leaves and flowers. Apply as a foliar spray up to early  flowering. Fully organic. 

BOOSTERS the industry standard in boosters Through our research on organic stimulators we have found an extraordinary line of products that we are proud to include in our range. The Terra Aquatica Pro Roots, Pro Bloom and Protect were developed by independent researchers, and our tests, as well as those conducted by several of our clients, were dazzling! Conformed to European regulation CE N° 834/2007 on organic agriculture, manufactured naturally and totally biodegradable. Pro Roots (formerly G.H. Roots) ultra concentrated root booster TA’s concentrated root booster  delivers the results of the original formula in a super concentrated form, allowing mineral growers to minimise the amount of organic matter in their grow. Ideal for systems such as AutoPot that are optimised for mineral nutrition.  Fully organic formulation.

BOOSTERS the industry standard in boosters Through our research on organic stimulators we have found an extraordinary line of products that we are proud to include in our range. The Terra Aquatica Pro Roots, Pro Bloom and Protect were developed by independent researchers, and our tests, as well as those conducted by several of our clients, were dazzling! Conformed to European regulation CE N° 834/2007 on organic agriculture, manufactured naturally and totally biodegradable. Pro Roots (formerly G.H. Roots) ultra concentrated root booster TA’s concentrated root booster  delivers the results of the original formula in a super concentrated form, allowing mineral growers to minimise the amount of organic matter in their grow. Ideal for systems such as AutoPot that are optimised for mineral nutrition.  Fully organic formulation.