ReduSystems | GS-4 Xtra

Removes Dirt Without Brushing

No Hydrogen Fluoride Gas

Inside & Outside Use

Glass Greenhouses Only

Double-Concentrated Formula

Deep Clean, Less Product Needed

GS-4 Xtra removes dirt, soot, dust and rust without brushing, simply by spraying on the correct concentration and rinsing with water. Because it's double-concentrated, it takes about half the product of regular GS-4 to clean the same area, so less needs to be bought, stored and transported.

GS-4 Xtra works on both the inside and outside of the greenhouse, though the greenhouse must be empty and crop-free when applying it inside. It's a strong product, so protective gloves, safety glasses and a mask are needed when handling it, and applying it in direct sun should be avoided since the product will dry too fast and can damage the glass.

Diagram showing how GS-4 removes dirt from glass so more light passes through

Drone spraying a coating over a greenhouse roof

Spray and Rinse

Applied by machine or hand with a spray gun, then thoroughly rinsed with clean water within about 5 minutes.

Worker on a greenhouse roof applying a coating with a machine

Built for Glass Greenhouses

Developed specifically for glass, not suitable for plastic, acrylate or polycarbonate greenhouse covers.

Apply to a dry surface using a machine or a hand spray gun. Allow the product to react briefly, but don't let it dry on the glass, then rinse thoroughly with clean water within about 5 minutes. Only use above 5°C, and avoid sunny weather since the product will dry too fast and can damage the glass. If applying on the inside, the greenhouse must be empty and crop-free."

For light contamination, dilute at 1:39: use 2.5 cans per hectare (1 can per acre), mixed with 1,950 litres of water per hectare (206 US gallons per acre).

For heavy contamination, dilute at 1:19: use 5 cans per hectare (2 cans per acre), mixed with 1,900 litres of water per hectare (201 US gallons per acre). Either way, the product and water together add up to around 2,000 litres of spray liquid per hectare (roughly 211 US gallons per acre) when applying by machine.

GS-4 Xtra is suitable for glass greenhouses only, not plastic, acrylate or polycarbonate. Do not use on coated glass, or near fluorine-sensitive crops such as bulbs and tubers. For tempered glass, test a small area first and check clarity after rinsing.

If applying on the inside, the greenhouse must be empty and crop-free. GS-4 Xtra is a strong, double-concentrated product, so protective gloves, safety glasses, a mask and protective clothing should be worn when handling it, avoiding inhalation of spray or vapour.

AntiReflect

A coating applied to the outside of the glass that increases usable light and lasts around 2 years. GS-4 Xtra is used to remove it at the end of its useful life.

GS-4

The standard-strength version of GS-4 Xtra, better suited to lighter contamination. Both use the same spray-and-rinse process for glass greenhouses.

Why ReduSystems

The Right Solution for Every Season

Light is the most variable factor in greenhouse growing, yet many growers do not yet use it fully throughout the year. We help growers protect, improve and adjust crop performance in every season, with a solution matched to each stage of the growing cycle.

With decades of experience in light spectra, PAR and photosynthesis, we adapt every solution to the grower's crop, greenhouse and location. Our advice is based on science and real-world results, not guesswork.

Frequently asked questions

GS-4 Xtra is suitable for glass greenhouses only. It's not suitable for plastic, acrylate or polycarbonate greenhouses.

Only when applying on the inside. GS-4 Xtra can be used on the outside of the greenhouse at any time, but interior application requires an empty, crop-free greenhouse.

GS-4 Xtra is diluted with water and sprayed onto the glass by machine or by hand with a spray gun. Allow it to react briefly, then rinse thoroughly with clean water within about 5 minutes.

GS-4 Xtra is used to remove AntiReflect specifically, at the end of its roughly 2-year useful life. It does not remove the seasonal shading or diffusion coatings, such as ReduSol, ReduHeat or ReduFuse, those are removed with ReduClean or ReduClean for diffuse coatings instead.

GS-4 Xtra is double-concentrated, so it takes about half the product for the same level of contamination. Both are suitable for glass greenhouses only.

Apply above 5°C, and avoid sunny weather, since the product will dry too fast in direct sun and can damage the glass if it isn't rinsed off in time.

Contact us

Talk to a ReduSystems Specialist

Every greenhouse faces different light and climate challenges, depending on the season, crop and greenhouse type. Choosing the right strategy can be difficult with so many factors to consider. Our specialists offer tailored advice based on your specific situation, helping you find the right solution for your crop, greenhouse and climate, all year round. Get in touch to discuss what works best for you.

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Our brands

GS-4 Xtra

Deep Clean, Less Product Needed

Half the Product

Quick Rinse Process

Shelf Life

Works Well With GS-4 XTRA