As mentioned, the horticultural lime then helps make your pothos potting mix slightly acidic. 'Pothos like their pH slightly acidic around 6.5. If you found that your soil pH is too high ...

First, let me share how I mix my potting soil ... I decided to get a soil meter. The pH balance of potting soil out of a bag was often too high or too low. I found that by mixing my own soil ...