In soil if plants look healthy dont mess with ph. PH issues and difficulty in solving them are 1 of the reasons i moved to coco coir.So my runoff waters PH seems to be around 5.0 despite the fact I always double check my watering waters PH (always between 6.0 and 6.5). The soil I use is BioBizz All Mix (claimed PH 6.4).
How to fix this and how to prevent it happening in the future?