Depending on what you're growing, coco peat should be fine, but make sure that the bag says "exposed to rain from three monsoon seasons" or something like that, because unwashed coco fibers tend to have sea salts that kill CPs faster than Miracle-Gro potting soil. If you can't find coco peat, decomposed pine needles are a good acidic alternative, but those are very light and airy, so you'll probably want to find something to make the soil heavier. Don't use sedge peat unless you're growing Aldrovanda or certain species of Utricularia, it's usually too high in nutrients.