Oh! And i can reverse the problem!

The process is called amelioration - it comprises of two stages - aeration, and bio manipulation.

Compressed Ozone is funnelled through tubes to the bottom of the lake / water body, and is released through stainless steel disks. It completes the oxidation process of the decay/ decomposition of organic matter all the way from the depth to the surface. Decayed matter starts to surface and is collected. Gradually the lake literally "vomits" out the crap. That's aeration.

All this while the water quality is measured, and once it reaches optimum level, specific species of fishes are introduced , and that's bio manipulation.

The lake shines again!🍀