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
Winter and garden ponds. Pioneering marginals like Bog Bean (Menyanthes trifoliata), the Spearworts (Ranunculus flammula and R. lingua Grandiflora) and Parrots Feather (Myriophyllum aquaticum syn. proserpinacoides) that seem intent on investigating the outer reaches of their universe should be cut back to home base: show them what youre made of. The same goes for Reed Maces ( Typha angustifolia and Typha latifolia). Feel around the baskets to see which plants have linked up in a firm vegetative bond. A bit of basket busting may be in order to sort them out. marginal pond plants
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
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
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
Fish food understanding what's important ... ALWAYS, ALWAYS look at the analysis of the koi food you buy. The ash, fibre and moisture percentages are worth absolutely nothing. So the higher these percentages the more the money is being wasted. If a 5 kg bag of 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. This means that the R200 you paid for the 5 kg bag actually resulted in your paying R144 for food (3.6 kg) and R56 for rubbish (1.4 kg). Worse still 18% of the food (ash and fibre pass through the fish) now has to be handled/removed by the filter - 900 gms of solid waste has to be removed from the pond. http://www.practical-water-gardens.com/koifood.htm pond pump selection
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
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
Plants and algae in a pond compete for the available nutrients in the form of phosphorous and nitrogen containing chemicals. It follows that the more pond plants there are then the greater the probability of reducing algae blooms (green or brown murky water). Old well-planted and chemically stable ponds as a result tend to suffer less from algae problems than newly created young ponds. Yes algae are plants and blanket weed is algae. Ponds with lots of blanket weed tend to have crystal clear water. Blanket weed thrives best in alkaline (higher pH) ponds. pond algae and uv

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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