Ask about Biobizz All-Mix Potting Soil - 20L Bag
All·Mix is a heavily pre-fertilised substrate mixture that emulates a rich outdoor soil with a full microbial active ecosystem. It has been designed to contain enough nutrients to sustain lush growth for a couple of weeks without a need of adding any extra fertiliser.
Biobizz products contain only natural organic elements rather than mineral salts, such as magnesium or sulphate salts, which you might find in other fertilisers. This gives All·Mix a high electrical conductivity (EC) value. And while its organic elements are impossible to measure, they help to maintain the pH values at the correct level.
When using All·Mix for the first time, moisten it with water and leave to stand for 36 hours. This gives the Pre·Mix active fertiliser and microorganisms inside the substrate a chance to start working their magic before the plants go in.
Keep the soil slightly warm at all times – if it’s too cool, the microbial activity slows down, which makes it more difficult for the plants to grow. You also want to allow the soil to dry out between each watering. Because, as the All·Mix substrate dries out, fresh air gets in, which helps the soil to breathe.
DELIVERY
- Mainland UK delivery only
- Orders under £90: £8.35 shipping.
- Orders over £90: free shipping.
- Orders are usually dispatched within 1–2 working days and sent on a next working day service after dispatch.
- Please allow up to 5 working days during busy periods, bank holidays, courier delays, or stock delays.
- If an order is urgent, customers should contact us before ordering.
- No international shipping at the moment
RETURNS
- Unused and unopened items can be returned within 14 days of delivery, provided they are in the original packaging and suitable for resale.
- Customers are responsible for return postage unless the item is faulty or incorrect.
- Returns can be started from your customer account on Hydro Hub.


