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Pond building materials ... Specially formulated flexible plastic non preformed pond liners are also suitable. Look for good guarantee. Do not use ordinary plain black sheeting such as that used by builders. Always source from reputable supplier. For larger ponds (above 600 litres or about 120 gallons) garden pond liners should be installed - preformed liner ponds become too expensive. Rubber (butyl or EPDM) is the material of choice. You can go as big as you like. Even small reservoirs use this type of material. Liner ponds are ideal for water lily ponds. For ponds below this size it would be very wise to choose from a range of preformed pond liners or preformed garden ponds as they are better known. A word of warning: Do not let your dogs swim in water where garden pond liners are used non preformed pond liners are easily damaged by their claws. If you do have dogs go for fibreglass preformed garden ponds. http://www.practical-water-gardens.com/pondliners.htm fiberglass water features
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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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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
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Sponges in pond pumps ... These days the best pumps do not have sponges inside the suction body. Such sponges are a source of major hassles especially in summer when they block up every couple of days and have to be removed. So long as you keep this type of pump away from heavy debris on bottom of pond (stand the pump on a brick for example) you will get away with removing the sponge permanently ... although such use would nullify the pump's guarantee. The sponge is there to protect the impellor form debris damage. fountain pumps
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To buy two pumps, if selected correctly, is often no more expensive than buying a single larger pump. However being able to switch off the waterfall pump (normally the bigger of the two pumps) can save an enormous amount of money over the lifetime of the pond. The fish do not mind the waterfall being switched off most of the time and if you are at work you cannot enjoy the sights and sounds of the waterfall - so why waste electricity. Furthermore if one pump does break down you can keep your biofilter alive by using the second (spare) pump. In one of my calculators you are shown how to calculate how much you will be able to save by using two pumps in your pond. In the example I use in the calculator $309 is saved over 3 years http://www.practical-water-gardens.com/art2pumps.htm all about pond pumps
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If you want to ensure your pond always stays crystal clear then an ultraviolet light must also be installed since without this the risk of a pea-soup coloured water developing is great. Fish and biofilter bacteria need large amounts of oxygen to survive so a reliable pond pump which will operate 24 hours per day every day must be obtained. A biofilter even the very best (vortex type biofilters are the best but are difficult to install and are only necessary on large sophisticated koi ponds) koi filters
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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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Any pond pump with a guarantee of less than 2 years is probably not suited to most pond environments. Short term guarantees indicate lack of product confidence in difficult environments such as ponds. For safety sake use pumps with the longest possible cable and avoid joining wires if you can. It is always best to wire a pump directly into the earth leakage system of the house rather than depend upon a plug and socket. If you do join wires outdoors use waterproof cable connectors. Most countries have strict rules governing the sale of pond pumps so check for authentication and compliance with your country's laws. pond pump curves
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Pond volume measurement ... Measure the depth using a tape or stick. Using the pond pump measure how long it takes to fill say a 5 gallons container. Now pump water out of the pond for say 5 minutes Record the depth after pumping out water The pond's volume is then calculated as follows: S = depth of pond in inches or any unit before pumping starts D = inches or any unit of water pumped out of pond when pumping stops T1 = time to fill the container T2 = time pump was run to pump out water V = volume of container ..... Volume of pond = (S x V x T2) DIVIDED BY (D x T1) waterfall pumps
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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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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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