FoCoco provides excellent insulation. This means that coco isn’t prone to overheating, due to excessive ambient air temperatures, as many other mediums (making it ideal for warm geographic zones). This is because water tends to make its way into the lower regions of the coco coir, leaving the top layer relatively drier. Because of this, heat needs to penetrate a drier top layer of coco coir before reaching the watered areas of the media. As water is a great conductor of energy (in the form of heat) the lower wet area being protected by a drier surface helps keep the lower areas of the media, where the bulk of the root mass is found, cooler. As media temperature and oxygen levels (air porosity) are interrelated (the warmer the media the less oxygen) this insulation plays an important role in promoting root health and vigour.Where working with mains water we recommend a 30% run off regime to cater for the NaCl (sodium chloride) and other elements that are naturally present in mains water supplies. Sodium (Na) and chloride (Cl) are the constituents of common salt. These normally occur together (i.e. sodium chloride = NaCl) and are not taken up to any degree by most plants, especially sodium. Therefore, they tend to accumulate if present in significant amounts. More runoff helps to limit the build up of problematic elements within the media. --- This is of great interest to me as after the wet I want to do another out door grow .
