Contact Premier Extrusion


For your trade and wholesale enquiries

Rear Factory,
26 - 28 Glenbarry Road
Campbellfield, Vic, 3061
Tel: +61 (03) 9357 8372

sales@premierextrusion.com.au

Aeration

Aquaculture

Using Leeaky Hose as an air carrier in fish ponds increases profits through faster growing fish, less food waste, and shortened harvest intervals.

Boats Crayfish Packing

Why Aerate For Aquaculture?

  • Grow more fish in a given area of water.
  • Grow fish faster through increased food supply.
  • Reduce loses of fish through stratification.
  • Lower food costs per kilo of fish harvested.

Leeaky Hose Aeration

  • Increases oxygen levels in any given area of water
  • Provides greater levels of oxygen to phyloplankton (food)
  • Equalising water temperature through continual convection
  • More food through faster, more efficient breakdown of pond waste.

Before the development of Leeaky Hose

Fish, eel and lobster growers faced two alternatives:

  1. To let the fish grow naturally (and very slowly with marginal profits), or
  2. Install paddle wheels, aerators and carry power to each site.

The second course of action was available only to major growers able to make the capital investment and pay the continuous energy costs without any return on their investment for three or four years.

Leeaky Hose aeration is not only 70% - 80% cheaper to establish, but is 500% more efficient in adding dissolved oxygen to the water. Leeaky Hose installations typically require 50% less in annual energy costs.

Those farms which introduced some form of aeration will increase pond yields because of:

  1. The low cost of Leeaky Hose (compared with paddle wheels),
  2. Not having to run expensive electricity lines to each dam, and
  3. The higher dissolved oxygen yield for a given volume of air.

Why Is Oxygen So Important in Water?

When we put fish into a pond, we put them there to grow, not to practice their survival skills. But in still water the oxygen that is used is only replaced slowly, through oxygen brought in during rain falls, or wave action on the surface on windy days. In the meantime the fish are competing for the oxygen with their food - the phyloplankton and the bacteria that breaks down the pond waste into food.

If the fish use the oxygen they will not grow bigger because their food supply is low. If there is not sufficient oxygen for the aerobic bacteria to grow, this makes it possible for anaerobic bacteria to flourish.

Batavia Coast Fisheries

The company's fishing fleet catches live Western Rock Lobsters off the Batavia Coast of Western Australia for the local and export markets. Up to 40 tonnes of lobster are kept live in on-shore tanks. Up until 2000 the company aerated the tanks with slotted pipe, fed by six 7.5kw blowers. They found that this circulated the water, but added no oxygen. They first installed Leeaky Hose for aeration in the year 2000. Troy Hutchison of Batavia says that the added oxygen from Leeaky Hose now allows extra stocking of more than 10 percent of lobsters per tank. The company is also making major energy savings as the number of blowers required has been reduced to two. The 12 metre long tanks are aerated through 20 short lengths of Leeaky Hose across the 630mm width.