Canna Flush is a great solution to use to help rid your plants of unnecessary nutrients and built-up minerals, which could potentially cause them damage. Overloading your plant with nutrients can cause over-fertilisation or can block-out vital elements. Canna Flush cleans the plant of the excess nutrients without killing useful bacteria. This product is best to use just before harvest or when there are signs of nutrient burn. Available in 250ml, 1L and 5L bottles.