Simply mix with compost to save up to 90% of water. This is because Hozelock water storing gel is the fastest acting gel available, it acts quickly to lock water into the compost. This reduces the amount of water that is wasted either by running out of the bottom of the plant pot, or due to evaporation. When the water storing gel is mixed into the compost, it forms a series of miniature water resevoirs around the roots of the plant. This means that for most of the year plants in containers only need to be watered once per week. The gel supplies a constant supply of water to your plants. The water stored in the compost is released to the plant slowly as and when it is required.