Coco peat is used as a soil additive. Due to low levels of nutrients in its composition, coco peat is usually not the sole component in the medium used to grow plants. When plants are grown exclusively in coco peat, it is important to add nutrients according to the specific plants' needs. Coco peat from [[Philippines]], [[Sri Lanka]] and [[India]] contains several macro- and micro-plant nutrients, including substantial quantities of [[potassium]]. This extra potassium can interfere with magnesium availability. Adding extra Magnesium through the addition of Epsom salts can correct this issue