Pump head is measured from the pond surface

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Pump head is measured from the pond surface - not the bottom of the pond. Most people make the mistake of measuring from the bottom of the pond and this mistake can easily lead to an over specified pump that will cost more to buy and more to run. When buying pond plants check with the retailer ... how fast they grow and how big they will become. When small, plants can be very misleading. Low cost plants tend to grow big - a very general statement of course but bear it in mind. Floating plants make excellent nutrient scavengers because they tend to be fast growing. pond pump head or pressure
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
In winter the filter will continue to operate mechanically at all temperatures above freezing but there is little point in using the U/V unless the temperature of the water rises well past 10C (45F). If this is likely then many U/V clarifier manufacturers advise you fit new a bulb. If it freezes, drain the filter and start again in the spring as though from scratch. This means it will take about 6 weeks for the pond filter to be effective so start up early. all about pond uv and algae
How to select the right pond pump .. You only need this information to select right pump ... 1. Vertical height of waterfall inlet above water surface of pond (NOT bottom of pond) ... measure this in feet 2. Width of water overflow point for waterfall ... if overflow is series of smaller overflows add all together to get width in inches. If you have no waterfall choice is easier ... Waterfall Pump Selection Table ... check where height meets width in the table. This is the flow your pump model must deliver. For a wide range of guaranteed. http://www.practical-water-gardens.com/pumpselect.htm pond filter pumps
Vegetable BioFilters ... Aquatic Plants For Gold Fish and Koi Ponds The idea of using vegetable filters (also called veggie filters is an area where plants are deliberately grown en masse) to remove algae for Nitrate control and green water control is not new by any means. It has found use in systems where people do not want or cannot afford UV systems. Concerns expressed about vegetable filters include blocking of pump impellers by stray roots and leaves. Some plants would be worse than others ... eg water hyacinth. Despite this they are excellent nitrogen removers. An ideal plant to use is Azolla also called Fairy Moss. It grows extremely quickly and is capable of removing large amounts of nitrogen and of course carbon through photosynthesis. It is also easy to remove simply by netting in the event it over-runs the filter area. http://www.pond-solutions.co.uk/pjmvegfilter.htm water gardens and pond filters
Make access to your biofilter easy. If there is a risk of it overflowing and emptying the pond in the process then try to ensure the overflowing water would find its way back into the pond. This risk is real for most biofilters - if the outlet from the biofilter blocks then the pump will cause the water to overflow through the lid. If you are installing a new pond and arranging for a supply of electricity to it then do add any extra power point for possible future use. pond biofilters
Pumps and maintenance ... more and more modern pumps are being sold without sponges to reduce the hassle of sponge cleaning. Do get one of these in preference to one with a sponge if you like the idea of less maintenance. This type of pump is generally more robust and can handle small solids going into it without breaking the shaft or rotor. fountain pumps
Looking for a pond? If you want a stable pool environment then consider a pool with a surface area of at least 3.3 square metres or 30square feet. There may be the just the shape amongst the array of preformed pools on offer that fits your conception perfectly. On the other hand, armed with your dimensions, you will possibly find that those preformed pools stacked up in racks at the garden centre that look so vast, would seem pretty insignificant in your allotted space. Estimating the size of a flexible liner. Add double the depth to the length and breadth of the proposed size. The minimum depth ought to be 18inches to 2ft or half a metre. Keep the shape simple blanketweed in fish ponds
To correct pH problems in a pond use dilute solutions of vinegar, or lemon juice for high pH readings and baking powder for low pH readings. Make sure you do not add too much at once. The procedure is add some, wait, test again. It is important to always test at the same time every day since the natural pond cycle creates pH changes at different times of day. For example as carbon dioxide is released by plants the pH may well decrease, When the plants absorb carbon dioxide the pH could rise again. About 10am is a good time to test. all about water garden fountains
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

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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