Aquatic Plant Food + 250mls treats 1000 gallons (4500 litres Now is a good time to give your water lilies a boost. Enhances the growth of lilies and large plants, whilst also discouraging algae. Contains a special blend of nutrients to enhance the growth of lilies and other aquatic plants whilst also preventing algae and green water problems.  It promotes blooming and lush foliage. It's particularly good for small water features where plants can be starved of nutrients and is less messy than tablet fertilisers which need to be pushed into soil. Used by professional aquatic plant growers.