Mould can occur if the pool is not completely dry when folded or put away. Humidity and dampness can cause mould to grow due to stagnant water.

By keeping the water treated with the correct chemical levels, drying the pool liner completely when it is packed away and maintaining the pool in a clean state when in use you should avoid issues such as this. However, should this problem arise, we would advise to use a solution of water and washing up liquid or stain remover to remove the mould.