Ads
related to: koi pond problems algae control plants pictures and information systems
Search results
Results From The WOW.Com Content Network
In the treatment of sewage, systems composed of anaerobic ponds followed by facultative ponds usually have overall BOD removal efficiencies between 75 and 85%. Higher efficiencies are difficult to achieve because the effluent contains high concentrations of particulate organic matter, in the form of algae, naturally produced during treatment.
Barley straw, in England, is placed in mesh bags and floated in fish ponds or water gardens to help reduce algal growth without harming pond plants and animals. Barley straw has not been approved by the United States Environmental Protection Agency (EPA) for use as a pesticide and its effectiveness as an algaecide in ponds has produced mixed results during university testing in the United ...
Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
In the UK, the invasive species Crassula helmsii and Myriophyllum aquaticum have both escaped from garden ponds. These plants cause considerable practical problems in protecting freshwater. [2] Amphibious species such as frogs, toads, and newts are common in garden ponds, especially in overgrown areas with algae and reeds.
Bacteria commonly called blue-green algae are often present in bodies of water throughout the world, but if fed too much of the phosphorus and nitrogen in farm fertilizers, they can turn into harmful algae blooms that can affect drinking water, create oxygen-starved dead zones that kill marine life, spoil swimming, boating and tourism and ...
When the total back pressure in the system is considered, a pump should be circulating the total volume of water at least once per hour for proper water quality. An air pump can be used to increase dissolved oxygen. In a heavily stocked koi pond, an air pump is a necessity. Along with the water pumps, there must be jets placed in areas where ...
Ad
related to: koi pond problems algae control plants pictures and information systems