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What is the natural pH of Cocogro? Do I need to add a buffer such as limestone to adjust the pH?

Coco coir has a natural pH of 5.7 – 6.5. Adding buffers such as limestone or oyster shell is unnecessary. When growing in Cocogro it is important to always adjust the pH of your nutrient solution to 5.8 – 6.2 before watering.

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