Pre-buffered Coco Coir

[MateoinLosAngeles]

I'm transitioning my houseplants from peat based soils to coco coir mixes. I know this community has discussed in the past the need to rinse or even soak coco husk chips in distilled water to wash off any excess salts and applying cal-mag to reduce the levels of Na and K in the coco.

I've heard of people even soaking and rinsing these 5 or 6 times.

I wonder how reliable "pre-buffered pH adjusted" coco is? For example, I'm eyeing the Mother Earth coco. It says it's pH adjusted (I'm not sure why this is necessary) and pre-buffered.

Is this trustworthy or is it worth soaking the coco coir even if it's allegedly "ready to use?"