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Pond Management . ANR Update October 24 th 2012 Forrest Wynne KSU Aquaculture Extension Specialist. Winter Pond Care?. Good time to lime ponds if needed (total alkalinity < 30 mg/L) Turn off and remove aerators or diffusers (except ice eaters) Not much left to do!.

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pond management
Pond Management

ANR Update October 24th 2012

Forrest Wynne

KSU Aquaculture Extension Specialist

winter pond care
Winter Pond Care?
  • Good time to lime ponds if needed
  • (total alkalinity < 30 mg/L)
  • Turn off and remove aerators or diffusers

(except ice eaters)

Not much left to do!

most frequent pond management calls
Most frequent pond management calls

Aquatic plant /algae control

Fish kills and what can be done about them

3. Leaking ponds and how to repair them

send pictures or samples
Send pictures or samples
  • Wrap plants in wet paper towels, put in zip lock plastic bags and mail
  • Digital photos of good quality will lead to an identification most of the time.
http srac tamu edu http aquaplant tamu edu these sites are linked to http www ksuaquaculture org
http://srac.tamu.edu

http://aquaplant.tamu.edu

These sites are linked to:

http://www.ksuaquaculture.org

Find aquatic plant control fact sheets at these web sites and link:

aquatic pesticides nationally registered as of 2012 13
Aquatic pesticides nationally registered as of 2012 (13)
  • Copper (1950?)
  • 2,4-D (1959)
  • Endo thall (1960)
  • Diquat (1962)
  • Glyphosate (1977)
  • Floridone (1986)
  • Triclopyr (Renovate, 2002)
  • Imazapyr (Habitat 2003)
  • Imazamox (Clearcast 2008) KDA registered
  • Penoxsulam (Galleon, 2007) KDA registered
  • Carfentrazone (Stingray 2004) not KDA registered
  • Flumioxazin (Clipper, 2010) not KDA registered
  • Bispyribac-sodium (2011)not KDA registered
why aerate or circulate water in ponds
Why Aerate or Circulate Water in Ponds?
  • Plants, microbes and fish in ponds may consume more dissolved oxygen than can be replenished from the atmosphere
  • Avoid acute and chronic mortality
  • Improve water quality
vertical pump aerators best used in ponds 10 feet in depth or less
Vertical pump aerators – Best used in ponds 10 feet in depth or less
  • Best used in small, shallow ponds < 1 acre
  • May provide very limited water circulation in larger ponds
de stratification diffuser devices best for deeper ponds
De-stratification diffuser devices – best for deeper ponds
  • Land based electric powered compressors
  • One or more diffuser stone manifolds
  • Medium bubble size (1-3 mm) to reduce diffuser clogging due to buildup of calcium carbonate
wind driven aerators or de stratification devices
Wind Driven Aerators or De-stratification devices
  • Most locations have no wind when it is needed most – during hot weather
  • 33% capacity efficiency - no wind or too much wind
  • Costs about the same as an electric unit
  • Use when electrical installation is cost prohibitive
  • Low stocking densities
solar aeration de stratification devices
Solar Aeration (De-stratification) devices
  • At night or during periods of cloud cover?
  • Cost?
  • Use where electrical installation is cost prohibitive
  • Use at low stocking densities
fountains
Fountains
  • Nice looking!
  • Inefficient aerators or water circulating devices – may suffice in very small ponds
  • Cost about the same as an aerator
  • Uses similar amounts of electricity
leaking ponds and how to repair them
Leaking ponds and how to repair them
  • SRAC #105 – from re- compacting dams to artificial liner installation.
  • Publications on proper site selection and construction.
pond seepage
Poor site selection

Inadequate soils

Improper soil compaction

Most difficult pond related problem!

Pond seepage