Interpet Green Away 125ml - treats 625 litres. Use for treating green water or 'pea soup', removing the unsightly brown or green algae suspended in the aquarium. Green Away clumps the individual suspended algal particles so they can be trapped by your filter or sink to the bottom and be siphoned off during your next water change. It is highly effective in treating green water or 'pea soup', and removing unsightly brown or green algae suspended in your aquarium. Green water isn't a good look for aquariums and can be really bad for your fish. Excessive light or nutrients can trigger this ugly and potentially dangerous algal bloom in your aquarium which can affect oxygen and pH levels, making the water highly alkaline and potentially dangerous for your fish. Interpet Green Away helps to rid your aquarium of green water by binding together floating algae particles. This helps to increase water clarity and can be safely used with aquarium plants.