General steps to be followed to make the quality of ponds better

4. Pond Ecology
Eutrophication Issues
Physical factors(oxygen , PH)
Poor water quality
Muddy water
Protozoan parasites

5. 1) Manage trees and shrubs
• To maintain an open and sunny pond.
• Aim to keep 90% of the pond edges open and sunny
allow plenty of sun into the pond
• Consider trimming just a few lower branches

6. • 2) Removal of invasive vegetation
• Occasional removal of invasive,
dominant species.
• Makes way for other less competitive
plants provide good egg-laying
opportunities for other pond creatures

7. 3) Remove excess algae
 Removal with nets
 Application of herbicide
 Precipitate phosphorus with
chemical addition (buffered alum)

8. 4) Fertilization
• Determines the productivity of a
pond.
• Typical pond supports 100 to 150
pounds of fish per acre.
• Can double or triple this
production by stimulating the
growth of microscopic vegetation
• Food chain

9. 5. Prevention of oxygen depletion
• Do not overfertilize!
• Cause excess nutrients
• Algal bloom invades
• Reduce oxygen level

10. 6.CONTINUOUS INFLOW OF WATER
• Ponds lose water by evaporation during the summer.
• Excess nutrients will leave with the overflow water.
• Ponds with irregular overflow are likely to accumulate
nutrients rapidly than overflowing ponds.

11. • RENOVATION
• Elimination of all affected fishes
• A low cost, but time- consuming method
• To drain the pond and let the bottom dry.
• Can be emptied by using a pump set or siphon.
• Other method is the use of rotenone, a fish poison.

12. 7.Dredge the pond
• To get rid of bottom pollution
• Grab buckets & hydraulic
pumps are used
• Removal of toxic sediments