Skip to Content.
Sympa Menu

permaculture - Re: [permaculture] pond aerators

permaculture@lists.ibiblio.org

Subject: permaculture

List archive

Chronological Thread  
  • From: <permed@nor.com.au>
  • To: <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] pond aerators
  • Date: Wed, 14 Aug 02 09:21:37 -0000

>Log on to
>www.farmshow.com
>25 years of on farm ideas in a searchable database, also available as a cd
>ROM.
>I have seen articles there on building windmill pond stirers out of truck
>differentials.
>Mark

Frank - Do you have a specific reason for needing extra aeration....
would be an unecessary lot of work and expense unless you're considering
going seriously into aquaculture/fish farming which is in reality a quite
risky business. A healthy pond will support a nice stock of fish for home
consumption with no extra input at the natural stocking rate of the water
body - rule of thumb is 1 kg of fish for every 15m of linear edge (drives
the food chain) and 15 square m of surface area (oxygen for fish to
breath). Generally one doesn't need to aerate or provide extra fish food
at these stocking rates and one needs to carefully consider if cost of
the inputs will ever be recouped in higher fish yields. The higher the
stocking rates, the higher the inputs (cost, materials, equipment,
labour) and the higher the risk of system collapse.
Robyn




Archive powered by MHonArc 2.6.24.

Top of Page