News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.

stratification

Health & Welfare

Proper water circulation in aquaculture ponds, Part 2

Promoting water circulation during the day time is an effective strategy to enrich pond water with oxygen produced by photosynthesis, and can significantly reduce the costs of night time supplemental aeration. Many types of effective, commercial water circulators are available. 

Health & Welfare

Proper water circulation in aquaculture ponds critical

Many aquaculture ponds require mechanical aeration both for increasing dissolved oxygen levels and to promote mixing of oxygen-rich and oxygen-depleted waters, which also helps prevent turnover. Promoting water circulation during the day time is an effective strategy to enrich pond 

Responsibility

Pond aeration and aerators: Second thoughts

Aerators, especially paddlewheels, are often used to mix the water and address oxygen stratification in ponds. However, most aerators do not provide the most efficient and power-conscious service. Due to thermal and oxygen stratification in ponds, the efficiency of paddlewheel 

Responsibility

Light penetration in water

Light penetrating water is scattered and absorbed exponentially as it passes downward. The presence of dissolved organic matter and suspended solids further impedes light penetration, and different types of solids absorb different wavelengths.