Improving water quality with EM - Effective Micro-Organisms

How does EM do this?
EM comprises a mixture of micro-organisms; Amongst then are photorophic bacteria - these derive there energy from sunlight and are extreemly efficient at breaking down organic material into a form that can be used by the other microbes in EM.
As a result they will convert anoxious mud into a mineralised form.
Leaf matter in ponds
Where a pond is surrounded by trees, a major problem is the leaf matter that falls into the water. The leaves settle on the bottom, do not rot and with time will both reduce the depth of the pond. In addition, the water quality detriorates due to the release of tanins from the leaves - this both turns the water acid and through 'acid binding' locks up nutrients - this eventually results in an enviroment devoid of animal life.
To remedy the situation, one either has to remove the trees or dredge the pond - the latter is costly and requires the disposal of all the waste.
By applying EM, this situation can be reversed as the EM will hep to break down the leaf litter.

A healthy aquatic environment is a delicate balance between its 'organic' and 'inorganic' constituents.
A common problem is that a water body has too much organic material present - this settles to the bottom where it forms silt and sludge. This then becomes the home for anaerobic bacteria which feed on the organic material, producing methane and hydrogen sulphide gas - making the mud anoxious and locking up nutrients.
EM is extreemly efficient at breaking down the silt and mineralising the organic material, so that it an be used by other microbes which in turn become feed for zooplankton and other invertegrates, which are in turn become food for fish.