There are many products that are effective in controlling green algal blooms, but it is important to note that chemicals should always be a last resort. There are many products that are effective in controlling green algal blooms, but it is important to note that chemicals should always be a last resort. Dense forests provide dark organic material that dissolves in lake water like a tea bag. Typically, brown lakes are surrounded by forests or wetlands.
Even though the muddy water is not conducive to swimming, it has less colour than the water with dissolved tannins. So if an industry needs colourless water for an industrial process, it would probably prefer sediment-containing water to tannin-containing water. Even though the colour of lakes often changes from blue to green due to human impact, conservation and protection can improve the clarity and colour of lakes.
What does it mean when the water is green?
When algal blooms worsen, the water starts to look swampy; it is dark green throughout and you can’t see more than a few inches into the water. Goodale says many people don’t run their filters enough, leaving too much organic debris in the water. Cyanuric acid (CYA) is a water conditioner and stabiliser that prevents chlorine from breaking down in sunlight. As the amount of pollen in the water increases, it begins to settle on the film and can be mistaken for green or mustard algae.
Skimmer socks placed over the skimmer basket help to remove pollen floating in the water, but need to be changed frequently and will never completely eliminate the problem.