pH Down Terra Aquatica
pH Down Terra Aquatica
Unlike conventional regulators, pH Down isn't just a simple acid: it's a precise formula that combines acids with biological buffers and also regulates the calcium level — ideal for hard water. When preparing your nutrient solution, add the recommended dose to lower the pH in a controlled way, with no need for big corrections afterwards.
Thanks to its buffering effect, the pH stays stable until the next solution change, needing only occasional readjustment. Fully compatible with hydroponics, coco, bioponics and soil growing.
Free in-store pickup in Machico — order online and your order is ready within 1 hour.
Free shipping on orders over €100 and up to 10 kg to mainland Portugal, Madeira and the Azores.
For orders over 10 kg (e.g. substrates, grow tents, lighting), shipping is always charged separately, whatever the order value — in that case we recommend free in-store pickup.
Otherwise, shipping is calculated at checkout based on weight and zone (Madeira, mainland Portugal or the Azores). We also ship to several European countries.
For online purchases you have 14 days from delivery to cancel your purchase without giving a reason. Sealed products that cannot be returned once opened for health or hygiene reasons, such as cosmetics and food, are excluded.
All products come with a 3-year legal guarantee.
To start a return, email geral@stonedcompany.pt.
Payments and security
Ensure secure transactions and peace of mind with our trusted payment methods. Your security is our priority, and we use advanced security measures to protect your personal information and sensitive data.
Do you need more information?
Get in touch with us.
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Unlike conventional regulators, pH Down isn't just a simple acid: it's a precise formula that combines acids with biological buffers and also regulates the calcium level — ideal for hard water. When preparing your nutrient solution, add the recommended dose to lower the pH in a controlled way, with no need for big corrections afterwards.
Thanks to its buffering effect, the pH stays stable until the next solution change, needing only occasional readjustment. Fully compatible with hydroponics, coco, bioponics and soil growing.
Free in-store pickup in Machico — order online and your order is ready within 1 hour.
Free shipping on orders over €100 and up to 10 kg to mainland Portugal, Madeira and the Azores.
For orders over 10 kg (e.g. substrates, grow tents, lighting), shipping is always charged separately, whatever the order value — in that case we recommend free in-store pickup.
Otherwise, shipping is calculated at checkout based on weight and zone (Madeira, mainland Portugal or the Azores). We also ship to several European countries.
For online purchases you have 14 days from delivery to cancel your purchase without giving a reason. Sealed products that cannot be returned once opened for health or hygiene reasons, such as cosmetics and food, are excluded.
All products come with a 3-year legal guarantee.
To start a return, email geral@stonedcompany.pt.
Payments and security
Ensure secure transactions and peace of mind with our trusted payment methods. Your security is our priority, and we use advanced security measures to protect your personal information and sensitive data.
Do you need more information?
Get in touch with us.
