Blagdon Blue Pond Water Colour, Reduces Algae Growth, Helps Protect Fish from Predators, 250ml, treats 31,000 litres

FOR BEAUTIFUL BLUE POND WATER - create a beautiful blue pond with Blagdon Blue Pond water dye, EPA approved & FDA certified dye for ponds ACTS AGAINST ALGAE - helps reduce algae by reducing light levels entering the pond, which would encourage algae growth; for best results use first in Spring before the algae starts to grow PROTECTS FISH FROM PREDATORS - prevents predatory wildlife taking fish by making them harder for the wildlife to spot PET, PLANT AND WILDLIFE SAFE - harmless to pets, fish, wildlife and emergent pond plants. Uses an EPA approved & FDA certified dye for ponds AVAILABLE IN 2 SIZES - this 250ml bottle of Blue Pond treats 31,000 litres of pond water