Blue 100 pond dye for up to 100,000L – large pond/small lake

Description We have trialed this blue pond dye and have found that it is a brilliant way to control blanket weed. * Works in all garden ponds, small or large. * Very economical to use * Simple application methods * Saves time and effort * Filters light denying algae’s food source. * Lasts up to three months * Free of pesticides and herbicides * Harmless to plants, fish, filters and wildlife * All year round use The only challenge is to calculate the volume of water in your pond, which can be a bit daunting if, like me, you have forgotten most of the maths you learned at school. Please see Top Tips article “How to work out the dimensions of your pond”.