01642 224544
Biobizz Bio-Down is the 100% organic pH regulator derived from natural citric acid. It safely helps lower pH in your nutrient solution to the ideal 6.2–6.5 range, ensuring maximum nutrient absorption. Use in all mediums during both vegetative and flowering phases without harming beneficial soil micro life.
Optimise your plant nutrition with Biobizz Bio-Down, the certified 100% organic pH regulator designed specifically for the ethical and successful grower. Maintaining the correct acidity in your nutrient solution is paramount for maximising the uptake of essential minerals. Formulated as an aqueous solution derived from natural citric acid found in lemons and other citrus fruits, Bio-Down provides a fast, effective, and environmentally conscious method to lower your feed water’s pH without resorting to aggressive synthetic acids. This ensures your soil micro life remains unharmed and thriving, keeping your entire cultivation process truly organic, from seed to harvest.
Key Benefits of Biobizz Bio-Down
- 100% Organic Formula: Made from natural citric acid, Biobizz Bio-Down is a genuinely organic pH correction solution that protects beneficial microbial life in the substrate.
- Maximum Nutrient Uptake: Correctly balancing the pH level in the optimal range (6.2–6.5) ensures plants can absorb the maximum amount of nutrients from every feed.
- Universal Application: Suitable for use with any type of substrate, including soil, coco coir, and hydroponic systems, as well as all types of crops.
- Use Across All Phases: Can be safely used during both the vegetative (growing) and flowering (blooming) periods, allowing for consistent pH management throughout the entire life cycle.
- Full Biobizz Compatibility: Designed to work perfectly alongside all other Biobizz liquid products and substrates, ensuring a harmonious feeding regimen.
How to Use Biobizz Bio-Down
Bio-Down is highly concentrated, so always adjust the pH gradually, measuring frequently to avoid over-adjustment. It can be used in every watering session.
Optimal pH Target Range: 6.2–6.5
Dosage Rate:
To decrease the pH of your nutrient mix by approximately 0.5 points, apply 0.1 ml of Bio-Down per litre of nutrient solution.
Instructions for Use:
- Prepare the Nutrient Solution: Mix all necessary Biobizz base nutrients Bio-Grow or Bio-Bloom and stimulants into your water reservoir or watering can.
- Measure Initial pH: Use a reliable pH meter or test kit to determine the acidity of the mixed solution.
- Apply Bio-Down: If the pH is too high, add Bio-Down according to the dosage rate above, or add in very small increments.
- Stir and Re-Measure: Stir the solution vigorously for approximately 10 seconds and then measure the pH level again.
- Repeat as Needed: Continue adding Bio-Down in small amounts, stirring and re-measuring, until the pH falls within the optimal 6.2–6.5 range. The mixture is then ready to feed to your plants.
Grow Room Setup: For practical advice on setting up and maintaining your environment, explore 5 Essential Tips for Setting Up a Hydroponics Grow Room.
Available in 250ml and 1 litre.
Frequently Asked Questions
Is pH adjustment necessary when using the full Biobizz nutrient line?
In general, organic nutrients tend to naturally lower the pH into the optimal range (6.2–6.5). However, if your starting tap water has a particularly high or low base pH, or if you use reverse osmosis (RO) water, manual adjustment with Bio-Down is recommended to guarantee maximum nutrient absorption.Can I use Bio-Down in hydroponic or automated watering systems?
Yes, absolutely. Bio-Down’s natural and non-aggressive formulation is suitable for use in all growing mediums, including soil, coco, and various hydroponic setups, ensuring an organic process even in recirculating systems.How does Bio-Down compare in concentration to Biobizz Bio-Up?
Bio-Down is significantly more concentrated than its counterpart, Bio-Up. A dose of 0.1 ml per litre of Bio-Down decreases the pH by 0.5 points, while the same amount of Bio-Up would only increase the pH by 0.1 points.Should I add Bio-Down before or after adding my other nutrients and additives?
Always add Bio-Down after you have mixed all of your other Biobizz nutrients and additives into the water. The nutrients themselves will affect the initial pH level, so adding Bio-Down last ensures you are adjusting the final, accurate pH of the entire solution.SKU: 1490Free delivery on orders over £60*
- UK Mainland onlyStandard Delivery £4.95
- Heavy / Large item surcharge £2 per item
- 1-3 Days**
- UK Mainland onlyExpress Delivery £8.95*
- Next Working Day**
- UK Mainland onlyScottish Highlands £15.95*
- 2-5 Days***Can not be used with Heavy / Large items
**If ordered on a working day before 2pm cut off (Saturday and Sunday are not classed as working days).Please See Delivery and Returns page for more details.