| Size | 1Litre, 5Litre |
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Price range: £10.99 through £39.99
Please Note: From November 1st 2019, In accordance with the Offensive Weapons Act 2019, this product is prohibited for sale to those under 18. If you place an order to purchase this item, we will send you an email requesting proof of age in the form of official photo identity document (passport or driving licence). Orders will not be dispatched until the authenticity of the document has been ascertained. The courier may require an age verification check at the point of delivery. Alternatively, you can pick up in store and show your proof to staff.
Growth Technology pH down is a 30% concentration of Orthophosphoric acid (H3PO4). It works to acidify any solution it’s added to (bringing the pH of the solution down).
Garden tip: pH down is a very strong acid, it needs to be handled with care.
CAUTION: Always add the acid to water to avoid splashing and potential acid burns.
Plants in any hydroponic system can only uptake nutrients within the range of 5.5 – 6 pH. If pH levels fluctuate outside of this range, certain nutrients get locked out. This leads to signs of a nutrient deficiency, even if there is a high EC; with plenty of nutrients available in the solution.
Garden tip: For optimal results, manage the nutrient Solution’s pH.
Growth Technology has a full range of control solutions, essential for the proper management of nutrients in hydroponic systems. These products are manufactured using the purest and most concentrated sources available.
A pH meter is essential for maintaining constant pH levels. To ensure healthy growth, check the pH of the nutrient solution at regular intervals and when changing the reservoir.
Garden tip: If pH levels are too low, pH up should be added. If pH is too high, pH down should be added.
When managing pH, only a small dose should be added at a time, stir the reservoir and then test the pH again. If more amendments are required, a small amount should be added each time due to the strength of the solution.
pH down is a 30% phosphoric acid solution and requires safe and careful handling, including the following:
If you have any questions about our products, feel free to call us now or send us an online enquiry and we’ll get back to you promptly.
Enquire Now Call 0161 688 7333