Use of coconut fibre?

[Annies]

What did you do to take care of the pH issue regarding the use of coconut fibre?

[shiva]

I have heard it depends upon the plants than coconut fibre, although we have to see best plants that can survive on any pH levels.

[srinivas]

You'll definitely want to buffer it first. Soak the coco coir in a calmag solution overnight. This swaps the natural potassium and sodium salts for calcium and magnesium, which stabilizes the pH.

Even after buffering, keep an eye on your reservoir pH as it can tend to drift up over time.