Pond h2o is often dyed black to include drama with Particular products which also help decrease the Make up of algae, creating pond servicing simpler much too. The science functions such as this: non-poisonous pond dyes Handle algae since the coloured dye filters sunlight to disrupt photosynthesis. Alternatively, obtain a https://www.amazon.co.uk/gp/product/B0D5BZZZ7K