Ultra Flush – Cleans Roots, Better Buds, Bigger Finish!
Professor’s Ultra Flush is a powerful pre-harvest flushing solution designed to remove built-up salts, fix nutrient lockout, and dramatically improve the taste, aroma, and quality of your final crop.
In hydroponic systems, excess nutrient salts can accumulate around the root zone, leading to nutrient lockout—a condition where roots can no longer absorb essential elements. Ultra Flush solves this by thoroughly cleansing the medium, restoring nutrient uptake, and setting the stage for a smoother, more flavourful harvest.
Use Ultra Flush during the final phase to eliminate harsh chemical residues and unlock higher terpenoid production, leading to more intense aromas and refined flavours. It also helps redirect energy away from nutrient absorption and into final bud swell, enhancing visual appeal and overall yield.
Why Growers Choose Ultra Flush
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Removes excess salt build-up from the root zone
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Corrects nutrient lockout for improved absorption
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Boosts final bud size and pre-harvest swell
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Increases aroma, taste, and overall crop quality
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Promotes higher terpenoid and essential oil production
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Ideal for hydroponics, coco, and soilless systems
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Use before harvest for a smoother, cleaner finish
Cleanse your roots. Elevate your harvest.
Professor’s Ultra Flush is your final step to unlock the full potential of your grow—for purer flavour, stronger aroma, and superior results.
Application
Hydroponics: Week 1 and 4 of the flowering stage. Add 3ml per 1L of water to the nutrient tank and feed as normal. This mixture should be used for feeding your plants for just one day. After that day, it is important to empty the nutrient tank to remove the Ultra Flush solution. Once the tank is emptied, you can resume your regular feeding schedule for the plants.
One week before harvest: Add 3ml per 1L of water to the nutrient tank. Water plants everyday to elevate taste, aroma and overall quality of the final harvest.
Nutrient Lockout Correction: If you encounter nutrient lockout, take the following steps:
- Mix 30ml of Ultra Flush in a 10L bucket.
- Pour the solution directly over the growing medium.
- Allow 48 hours for Ultra Flush to take effect.
- After 48 hours, resume feeding your plants with nutrients at half strength.
- After one week, return to your normal full-strength feeding schedule.
Available in 1L, 5L, 10L and 20L
Australia’s best hydroponic nutrients — trusted by home growers, craft cultivators, and licensed medical cannabis farms. Designed for serious results. We offer certified organics — if it’s not certified, don’t trust the label.