Easy Life Blue Exit 250ml removes Blue Green Algae (cyanobacteria) and does not contain copper.

Although on the label it mentions that Easy-Life Blue Exit that it removes stains it is primarily designed to remove the Algae itself and not just stains.

• Gets rid of Blue Green Algae (cyanobacteria)

does not contain copper

• Blue Exit easily removes stains caused by CYANOBACTERIA in freshwater aquariums.
• Removes and cleans algae stains from plants, bottom material and other aquarium surfaces.
• Unwanted blue-green and slime algae stains are removed rigorously.
• Harmless to fish, shrimps, snails and plants. Also, great for preventing cyano problems.
• Very economical in use.