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How To Use These Links
We have extracted brief information about the page you will go to if you
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UV light water filters, UV lamp changes & pond algae control. Pond volume, stock density and sunlight intensity is required to specify correctly the size of the Ultra violet (UV) light you need to prevent algae making your pond go green For a pond of around 250 gallons in full sun and highly stocked a 4 watt UV will do the job. This will also be big enough for a pond with very few fish and situated in the shade of 700 gallons. This assumes the UV comes equipped with a quartz tube to ensure the UV runs at peak efficiency. For a pond with average stocking an 8 watts UV will handle pond volumes up to around 1200 gallons depending upon the sun/shade situation. http://www.practical-water-gardens.com/artuvcapacity.htm uv maintenance, lamp changes
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Oxygen in ponds ... On occasions fish in ponds with no fountains or waterfalls may look listless in winter due to carbon dioxide levels being excessive but the problem quickly sorts itself out when windy and bright weather returns. In summer water can hold much less oxygen and the animal and plant life (algae) is also thriving due to higher temperatures along with more nutrients in the water associated with feeding fish. The living organisms are therefore emitting more carbon dioxide in a situation of potentially disastrously low oxygen levels . Fish may then die from suffocation. uv maintenance, lamp changes
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Pond pumps and running costs. Before buying any pump check what the running cost will be. Look on pump box and if you can find watts consumed multiply this by 8.76 and you will get units (kWhrs) of electricity consumed every year by your pump. Find cost per unit and you can work out running cost of the pump. If you can only see amps on box you can work out watts as follows: amps x voltage of mains supply = watts. Once again multiply by 8.76 to get annual cost. use this figure to compare costs of 2 different pumps since running cost is generally far more important than the purchase cost. waterfall pumps
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Ponds in winter ... Something very strange happens to water at 4C (39F). Instead of warmer less dense water being at the surface, as in the summer, the density changes and the water that is closest to freezing becomes the least dense and floats to the top. The result is that the bottom stays at a fairly steady temperature under a blanket of cold or frozen water. If the pool freezes, there is nothing to worry about for a few days. There is plenty of oxygen in cold water even if the fish needed it. But if there is any rotting matter in the bottom of the pool, toxic gases produced in the muck could build up. In order to maintain gaseous exchange between the water and the air, float a ball or a piece of wood in the pool. all about ponds and waterfalls
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Filamentous algae and blanket weed. Attached filamentous algae can be seen growing on the rocks of a waterfall or on the sides of the pond. The growth of filamentous algae results from high levels of nutrients, carbon dioxide and the catalyst, the suns energy. Methods of controlling filamentous algae include increased shade, reducing the frequency of fish feedings, practical water changes, and the use of chemicals or plecostomus (algae-eating fish) during the summer months. High pH levels suit algae growth of this kind. This is one reason chalk stream or spring creeks tend to have blanket-weed and are very clear. blanketweed in fish ponds
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Measuring pond volume using science .. this is worth pointing out for its simple but brilliant bit of chemistry. Once more I am grateful to a reader for pointing this out to me. This method depends upon a pondkeeper using salt in the pond water. By measuring the salt concentration in the pond water before and after adding a known amount (lbs) of salt to the pond it is possible to calculate the pond volume very accurately and easily assuming the salt hydrometer is also accurate. If you want to know more e mail me and I will send you a calculator pond pump head or pressure
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UV light water filters, UV lamp changes & pond algae control. Pond volume, stock density and sunlight intensity is required to specify correctly the size of the Ultra violet (UV) light you need to prevent algae making your pond go green For a pond of around 250 gallons in full sun and highly stocked a 4 watt UV will do the job. This will also be big enough for a pond with very few fish and situated in the shade of 700 gallons. This assumes the UV comes equipped with a quartz tube to ensure the UV runs at peak efficiency. For a pond with average stocking an 8 watts UV will handle pond volumes up to around 1200 gallons depending upon the sun/shade situation. http://www.practical-water-gardens.com/artuvcapacity.htm uv maintenance, lamp changes
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Do not buy fish food with more than 10% ash in it unless you know why. Read the label. If no label BE CAREFUL of quality. Gold fish food or koi food bought in stick form is normally money wasted and offers no real benefit to the fish. It is the analysis of the food that is important not the physical shape. Gold fish food or koi food in stick form was developed before pellets could float - this is the reason gold fish food or koi food sticks were invented. pond pump selection
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If you are sick and tired of looking at debris on the bottom of your pond then consider buying an electrically operated vacuum cleaner. Just make sure that it is safe for pond use. OASE make the one that is best known. The latest version is Pondovac 2. For people who do not like to get their hand too mucky when cleaning out a pond there are specially made long length gloves extending right to the shoulder. If the water is a little too cold then the fishermen amongst you could easily use those waders to enter the water if cleaning has to be done. fountain pumps
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UV light for green murky water control ... The most effective method of planktonic algae control is ultraviolet sterilization. The many advantages of UV sterilization make it a very attractive option for algae control. First, it is a physical treatment, so it does not change the water chemistry of the pond. Second, it is very easy to install. Third, the treatment takes place outside the pond, away from the fish and plan. Chemical treatments can be successful, but they can be expensive, temporary and potentially harmful to plants and fish ultra violet lights for pond algae
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Never switch off your pond pump for more
than about 60 minutes
Make sure the delivery pipe from the
pond pump is not kinked
Must the UV be placed before the
biofilter?
A waterfall adds oxygen to a pond by
creating a large surface area
Submersible pond pumps can operate
against a closed valve
It is a good idea to pump out about 10%
of your pond water
Lighting in and around ponds creates a
brand new dimension
Sick and tired of looking at debris on
the bottom of your pond?
Do not feed more food than what you fish
can eat
Pond Links and Tips
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