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  • Must the UV be placed before the biofilter? In theory it does not matter at all but in practice if you have a simple box type filter is must be before the filter. Reasons are: The UV works under small pressure - water must be forced through it while the biofilter drains under gravity. In sand filter systems (which I do NOT recommend) the UV light comes after the pond filter because the whole system is under pressure. Not applicable in many cases but you can also split the flow from your pond pump - part through UV light and part through biofilter. all about pond uv and algae

  • Save when you buy koi food or fish food. Check your koi fish food label. Do NOT waste money. Understand the specification on koi food and fish food packets and you will save considerable amounts of money and grow bigger koi fish more quickly. Do not believe everything you are told about koi food it might not be true. Check for yourself easily. Koi Food If a 5 kg bag of koi food contains 15% ash, 10% moisture and 3% fibre then 28% of the bags contents (amounting to a whopping 1.4 kg) is a total waste of money. http://www.practical-water-gardens.com/koifood.htm pond pump selection

  • 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

  • A pond's ability to hold koi should not merely be regarded as a function of its physical ability to hold koi, (ie, like storing groceries in a cupboard). A koi pond's stocking rate is determined by the filter's ability to process and breakdown the waste that koi produce. To be more precise, we need to be sure we do not overstock our filter, rather than our pond. This does not merely focus on the biological activity of a filter, but also it's ability to remove solids at the required turnover rate. A pond's water quality management system would also need to provide sufficient aeration for a given stocking rate. http://www.practical-water-gardens.com/benoverstock.htm pond pump selection

  • Spring has arrived. Pool lights which give an aura of nighttime mystery around the pond can come back out now. Check the water quality. Many serious fish keepers will do a partial water change of up to one third in order to dilute any build up of salts and chemicals they may have been adding. As the water temperature gets nearer to 10C (50 F) you can start feed the fish their normal food. A bit of live daphnia would be a special treat or chopped worms, yummy! preformed garden ponds

  • Avoid spreading fertilisers around the pond area and do your best to prevent water run-off from the garden into the pond. This is often the source of high phosphate content in a pond and the cause of bad algae problems all about water garden fountains

  • 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

  • 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

  • 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

  • Not got a biological filter? Then all the microbial activity that happens in biological filters has to happen in the bottom of the pool. All the muck that falls has to be digested by bacteria down there. But with the advent of winter this activity slows right down at a time of year when the potential load is increased by falling autumn leaves. Any leaves that have found their way in to the pool need to be dredged out with a net. Leave the resulting muck to drain away on the side of the pool for 24 hours. This will give time for any wildlife to make its way back into the pool. using pond filters for clean 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

Pond Links and Tips

 

 

 

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