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  • If you want to save money and reduce dramatically the risk of pond infections and fish disease do NOT use a sand filter for a pond. They are great for swimming pools, and bad for ponds. The basic reason is that many "dead-spots" are created because the water makes channels in the bed of sand. All water then flows through these channels and all the other sand becomes de-oxygenated. This situation allows anaerobic bacteria to grow (those that grow in absence of oxygen ... normal these cause bad smells). Anaerobic bacteria create pathogenic conditions in a pond. koi pond filters

  • 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

  • The best biofilter medium by far for conventional box-type biofilters is Alfagrog, a porous ceramic medium specially made for purifying fish ponds. Many people use plastic tubes, hair curlers, plastic coke bottle tops and the like. Be aware that these media need to be used in quite large quantities to be effective at holding sufficient bacteria to ensure clean (biologically speaking) water. You will need 40 times the volume of plastic tubes as Alfagrog to achieve the same biofilter capacity. In the USA Alfagrog is also known as Supra biomedia for pond filters

  • 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

  • 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

  • I received a very interesting question this week. The question was what is difference between a biofilter and the powder she throws into her pond every week as recommended by a dealer. The powder she was referring to is called a bio-starter or bacteria starter. These powder products are offered by many companies and are probably worthless in practice. The powder is supposed to be a mixture of naturally occurring bacteria that are also found in biofilters. The types of bacteria required for effective biofiltration convert ammonia to nitrites and then to nitrates. All fish ponds need a biofilter. This is non-negotiable. pond biofilters

  • 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 re-oxygenate 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

  • Building bridges in and around your water garden ... encouraging aquatic pond wildlife to come and go Encourage wildlife into your pond environment. A pond attracts a wide variety of wildlife and the attraction can be made even greater by paying attention to a few approaches of design and layout. In nature diversity is enormous. You find that certain animals prefer shallow areas, others stony areas and still others wooded sections. Many insects prefer riffling running waters over a clean bed of gravel. http://www.practical-water-gardens.com/artbuildbridges.htm all about water garden fountains

  • If you want to save money and reduce dramatically the risk of pond infections and fish disease do NOT use a sand filter for a pond. They are great for swimming pools, and bad for ponds. The basic reason is that many "dead-spots" are created because the water makes channels in the bed of sand. All water then flows through these channels and all the other sand becomes de-oxygenated. This situation allows anaerobic bacteria to grow (those that grow in absence of oxygen ... normal these cause bad smells). Anaerobic bacteria create pathogenic conditions in a pond. koi pond filters

  • 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

 

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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