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Ponds & algae concerns ...Fish ponds without adequate plantings are most susceptible to algae bloom problems. These ponds are usually well stocked with overfed fish. The absence of aquatic plants eliminates competition with algae for available nutrients in the pond water. Practical fish stocking densities and feeding must be managed closely. UV sterilization is a proven method for controlling waterborne algae. Combining sterilization with adequate biofiltration and operating the two properly is most effective in eliminating algae blooms and maintaining clear water. filters and uv light
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Too much algae in pond .... Beware algae blooms in ponds. Let's equate this to what living organisms do in the pond. Think of the flora and fauna as exhaling carbon dioxide while inhaling oxygen during the night. From this you will agree that dawn is the critical time in a pond. Often people wake up to find dead fish and wondered what happened. Such deaths could be associated with very low oxygen levels coinciding with high carbon dioxide levels. When ponds are full of suspended algae such problems can arise. pond algae
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Pond pumps operate most efficiently with no pipe attached. This is obviously impractical so make sure the delivery pipe from the pond pump is not kinked or is being restricted by a build up of algae inside the pipe. This happens quickly in transparent tubing exposed to sunlight. Make sure that the pipe diamter is as wide as possibel and that the pipe length is as short as possible ... ie try to get as close as possible to "no pipe at all" so you get maximum efficiency pond filter pumps
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Pumps ... most small submersible pumps have impellors designed to turn in a single direction. This type normally have curved rotor blades for improved pumping efficiency. To make sure they do not start up in the wrong direction when you switch them on this type of rotor can only be turned by hand about 3/4 of a turn before it comes to a deliberate stop. If and when your pump suddenly stops pumping this is the first and easiest test to do to find out if the rotor needs changing or if something more serious is wrong with your pump. If the blades go round and round and round you probably just need a new rotor. pond pump flow rates
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Algae Isnt Bad, Is It? Algae can be either beneficial or detrimental to a pond, depending on the owners viewpoint. Algae provide nutrients for newly hatched fry, and indirectly act as a color enhancer. As algae grow in a pond, a population of zooplankton will also develop, on which the fish feed. These natural live feeds help develop the intense coloration desired in most koi. Unfortunately, algae blooms prevent viewing the fish so that sick fish can go undetected for days or even weeks. pond algae and uv
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A tip from Patricia in Ireland. She has a large pond with no fish. It had green algae problems. Patricia tried barley straw which took 6 weeks to work. Her tip is that to prevent the mess floating barley straw can make put it into old (or new for that matter) tights. Thanks Patricia. uv light specification
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A waterfall adds oxygen to a pond by creating a large surface area across which air can be absorbed into the circulating water. A simple fountain also adds large amounts of oxygen to pond water. A fountain is cheaper than a waterfall. It makes good sense even in the smallest pond to have a small fountain running night and day if at all possible. When fish deaths occur in a pond they often occur in the early hours of the morning ... at this time oxygen levels tend to be at their lowest. all about ponds and waterfalls
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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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Pond fish food sticks ... Today fish food sticks are available in all flavours, colours, sizes and formulations but they suffer from a significant disadvantage ... the cost per unit of mass and especially per unit of protein is normally very significantly higher than a similarly formulated floating koi food pellet. One possible reason for this is the incremental freight component (although I doubt this very much) because the bulk density of sticks is lower than that for pellets. I suspect the real reason is that manufacturers, distributors, retailers and any other party in the chain all make higher profit margins on the back of marketing investment going back many years and which still remains today. Next time you think of buying sticks just do a quick comparison. Varying pack weights between sticks and pellets is a well known "trick" of making pricing comparisons very difficult for most busy shoppers pond pump selection
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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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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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