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  • Koi and breeding fish in ponds ... Two key factors that stimulate koi to breed are water temperature and day length (photoperiod). These stimuli work in tandem to influence when koi spawn. Water temperature will fluctuate at comparable dates from year to year, whereas photoperiod is far more consistent. I.e. We know that June the 21st will be the longest day each year but that temperature will fluctuate year on year and is not as predictable as day length (especially up in Lancashire!). The overall effect of these interactions means that koi will spawn at different times all over the country (or perhaps not spawn at all). http://www.practical-water-gardens.com/longkoispawning.htm water gardening and water features

  • 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

  • Algae influence the water quality of the pond mainly by affecting the balance among dissolved oxygen, pH, carbon dioxide and nutrients. Algae produce oxygen, remove nutrients and take up respired carbon dioxide from both the fish and the algae itself. In heavily stocked ponds, the water becomes super-saturated with carbon dioxide. During daylight hours, algae can quickly strip the carbon dioxide out of the water, and pH levels can rise above nine in a matter of hours. Fish not acclimated to such sharp shifts may initially show signs of stress. uv light specification

  • Ponds & algae concerns ... At night, both algae and fish consume oxygen from and exhale carbon dioxide into the system. Algae compete with the fish for available oxygen in the water. A potentially serious impact of an algae bloom is the risk of an "algae crash" triggered by temperature or barometric pressure. When an algae bloom collapses, dead algae cells settle to the bottom of the pond, adding to the decomposing sediments oxygen demand. As the dead algae cells rupture, they release organic nitrogen and phosphorous back into the water, adding to the systems nutrient load. pond algae

  • Pond pump don't stop for more than about 60 minutes because,if you keep fish, the biofilter is starved of oxygen. For this reason two smaller pond pumps are often a better choice than a single larger pond pump. The main reason for a biofilter in a pond is NOT to filter the solids out of the water. It is to purify the water by removing offending chemicals. These chemicals are actually produced by the fish themselves by virtue of their normal breathing, eating and toilet behavior. Biofilters need a continuous supply of oxygen sourced from that dissolved in circulating pond water. Beware low oxygen levels in summer. all about pond pumps

  • When a person builds a pond it is to achieve the vision of crystal clear water. The vision normally includes a pond full of colourful fish and attractive aquatic plants. Often the reality of a pond is something quite different ... a green smelly hole in the ground. This need not be the case. Before you dig the hole do understand that if you intend to keep fish then a biofilter must be installed. A biofilter can be a fairly simple box shaped container with a suitable biomedia inside it onto which bacteria can accumulate so that they can do the job of purifying the pond water day in and day out. all about water garden fountains

  • Algae Growth (Photosynthesis) ... koi ponds are usually closed recirculating aquatic systems, meaning that these systems, unlike natural ponds with streams flowing through them, lack a fresh-water flow-through source. Rather, closed recirculating aquatic systems rely on filtration to purify and reoxygenate their water. Outdoor ponds that are closed systems are subject to seasonal algae blooms and attached filamentous algae growth due to nutrient and carbon dioxide buildup. The primary nutrients of concern are nitrogen and phosphorus. Nitrogen is a by-product of decomposed fish waste, uneaten fish food and accumulated sludge in the bottom of the pond. uv size required

  • Once upon a time all ponds were concrete. Today unless you wish to have a very large or special pond concrete is NOT the material to use. It is simpler, cheaper, better and quicker to use pre-formed ponds ideally made from fibreglass in natural rock finishes with matching waterfalls or streams. If you want a pond whose volume is larger than about 500 litres then it is best and most economical to use a black plastic liner designed specifically for pond building all about ponds and waterfalls

  • A biofilter is absolutely essential if you want to keep fish in a pond. In my opinion it is cruel not to install a biofilter since without a biofilter the fish will live in a potentially highly toxic environment. A biofilter will automatically start itself up once fish are introduced into a pond. Nitrosomonas and Nitrobacter are naturally occurring and will rapidly find their own way into the filter. They then need oxygen from circulating water as well as excreted ammonia from the fish (this occurs naturally) to thrive and multiply. It will take some considerable time for the biofilter to reach maturity. pond filters

  • Water gardening and winter ... Take a leaf from the Japanese approach. The Japanese build their gardens for all seasons. Part of the purpose of a garden is to reflect the time of year in the scene laid out to view. A view that seems static in itself, unchanging from year to year; but it changes from season to season. In winter the harmony between the various basic elements of stone, evergreen shrubs and trees and water is most obvious. The balance is not formal but is derived from the almost inimitable feel that the true master Japanese garden designer has for these elements. blanketweed in fish ponds

 

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

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