Pond Fish Food

We all feed our Goldfish and Koi a fish food….. But what makes the difference between a good fish food and a bad one?

This article identifies Pond Fish Food ingredients and what each aspect of the food promotes in your fish.


Proteins are constructed of amino acids. Amino acids benefit the recovery of damaged tissue, a good growth and the production of eggs and seeds. There are 20 amino acids, 13 of which are of importance to Koi. A protein shortage disturbs the Koi’s growth. It may even lead to a deformity of the backbone.  Fish food which primarily contains proteins from white fish meal such as Takazumi Professional Koi Foods have the best influence on a successful growth.

Crude Oil & Fat

Raw oil and fat provide most of the energy Koi need. Insufficient fats in the food may result in heart and liver problems. The required fats are contained within fish oil, wheat germs, maize oil and soy oil. These fats can naturally go off when exposed to oxygen. So do not use old food; it may even make your fish ill!


Carbohydrates provide energy, Koi build up energy less quickly than for example mammals, which is why there should always be carbohydrates in your fish food.


Every Koi food should contain phosphorus. Lack of it may result in a deformed backbone.


About 12% of water is composed of minerals. Minerals have several functions. Among others they benefit the construction of the skeleton and nerves as well as the osmosis regulation and the exchange of gases in the blood. The majority of minerals are absorbed from the water. The remainder via fish food.


Vitamins are as important to the growth and the metabolism of Koi as they are to mammals and therefore they should not be absent in Koi food.

Vitamin A – beneficial for a good growth and visual faculty as well as the protection of skin and fertility.

Vitamin B1 – helps to provide energy from carbohydrates.

Vitamin B2 – helps Koi to cope with transitional situations like transportation. Vitamin B2 also supports the build-up of muscles, mucus and skin.

Vitamin B12 – along with the vitamins B6 and B11 regulates the body’s absorption of iron and is involved in the formation of red blood cells. A shortage of these vitamins may lead to anaemia. The three mentioned vitamins also benefit the functioning of the nervous system and are involved in the amino acid metabolism.

Vitamin C – contributes to the build-up of the skeleton and resistance to diseases.

Vitamin D – regulates the absorption of calcium and phosphorus, which makes it important for the development of the skeleton. Vitamin D prevents deformations of the bone system.

Vitamin E – is necessary for the formation of red blood cells and the build-up, recovery and preservation of muscular and other tissues. It also stimulates the production of fertility hormones.

Vitamin H (biotin) – stimulates growth.

Vitamin K – benefits the clotting of blood in case of an injury.


Cholin is necessary for the digestion of fat.


Astaxanthin is the red pigment that generates the pink colouring of salmon, shrimps and flamingos. Chemically it is related to β-carotene (as is found in carrots) and vitamin A. It is among the group of carotenoids.

Astaxanthin is produced by various algae and plankton types. These are eaten by lobster like species, including shrimps. They store the pigment in the shells, by which they get a pink appearance. These species in turn are eaten by fish such as salmon and trout or birds like flamingos or red ibis who store the pigment in their skins and adipose tissues. This makes the animals’ flesh pink. Astaxanthin is not or scarcely excreted, so the pink colour remains.

With this in mind the addition of Astaxanthin  into a Koi food boosts the fishes red colouration.

Astaxanthin is also a strong anti-oxidant with properties that correspond with vitamin E. Therefore it should allegedly protect against UV light. Contrary to Spirulina, Astaxanthin can also be fed right throughout the year.

Astaxanthin has been added to Takazumi Gold Plus, Takazumi Mix and Takazumi Vital.

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Adding Aeration to your Pond Can be a Life Saver in Summer


Lack of Oxygen is the biggest risk your fish face during the summer months. Warmer water has a reduced ability to hold oxygen. Couple this with an increase in demand from your fish, and the fact that aquatic plants actually demand oxygen at night instead of producing it and this can result in serious problems.


How do you know when your pond is short of oxygen?

You may not know until too late when you look one morning after a hot, sticky night and some of your fish have gone belly up. If you lose fish overnight during a hot spell for no apparent reason, it is more than likely through lack of oxygen. Tell tale signs are that it will often be the larger fish that go as they demand more oxygen then smaller fish. Or alternatively that you just lose Golden Orfe or Sturgeon as they are the most oxygen demanding pond fish commonly available.

How to fix it

Aeration is the key to increasing vital oxygen levels and reducing harmful CO2. Garden ponds can be aerated in a number of ways. The simplest being circulating water with a pump – a Fountain Pump or Waterfall are best, though beware that turning these off at night often causes problems. You must leave fountains or waterfalls running 24/7 in hot weather.

The reason most people turn off fountains and waterfalls is generally to reduce noise at night. If this is the case consider a Pond Air Pump instead. Air Pumps such as the Evolution Aqua Air Pump range or Hozelock Air Pump models are designed specifically for pond use. These Air pumps are outdoor rated and ideal for adding the extra oxygen your fish require during the summer months. The major advantage is that they will efficiently aerate at a noise level that won’t be audible.

Hozelock Air Pump

Air pumps provide aeration via Airstones which can also aid with pond filtration. Filter bacteria are aerobic and the more oxygen you provide them with the more efficiently they do their job. Dropping an air stone or two into your Pond Filter will more often than not allow the filter to cope with with more waste.

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Pond Filtration Options – Pressure Filters

There are many types of pond filtration available for ponds nowadays such as In Pond Filters, Box FiltersMulti-Bay Filters, Nexus Filtration and Pressure Filters.

We are going to take a little look at Pressurised Filters and how they work.

Pond Size

Pressure Filters are ideal for small to medium size ponds and are fed directly from a pump which sits in the pond.


As opposed to flow-through box filters, pressure filters are sealed units meaning the water is still under pressure when leaving the filter. The pressurised return allows them to feed higher positioned watercourses or water features, allowing much more flexibility in the positioning of the unit.


Pressure Filters can be partially buried in the ground adjacent to the pond where they do not disturb the natural garden look or even installed next to the pond, below the surface level of the water. Many Pressure Filters also have Filter Rock Covers available to allow you to blend the pond filter seamlessly into the surrounding landscape.



Almost all pressure filter systems combine an integral UVC with mechanical and biological filtration to provide not only clear but healthy ponds for fish and other pond inhabitants.

Easy Cleaning

Some Pressure Filters such as the Oase Filtoclear, Laguna Pressure Flo and Hozelock Bioforce Revolution have built in easy clean back wash systems to allow simple cleaning of the filter in a matter of minutes without the removal of the lid.

Pressure Filter Back Wash System

Set Up

Due to the nature and design of Pressure Filters they are simple and easy to install. Most pressurised filter units have 3 hoses to attach, these will be the inlet, outlet and the back-flush outlet (this is blanked off while the unit is in operation). The inlet, outlet and back-flush outlet are all generally clearly marked meaning that you will have the system set up in no time at all, leaving you more time to enjoy your pond.

Most manufacturers have their Pressure Filters available as Pump and Filter Kits which provides the optimal pump and filter combination all in one box.


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What Should I Do If My Pond Freezes?

With winter well on the way and the inevitable cold snap to come. Most pond owners will be asking the same questions if their pond freezes over.

Frozen Fish Pond

Here are a few of those questions answered from our experts at Pond Planet.


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Autumn Pond Advice

Autumn is now in full swing

Now is the time to:

Pond In Autumn

Autumn Is Now In Full Swing


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Pond Advice for May & June

May and June bring around warmer water temperatures, longer days and increased sunlight which can lead to serious algae problems. Pond Keepers can suffer from green water algae or blanket weed. These can continue to persist throughout the summer if not controlled properly.

Green Water Algae

Green Water Algae is a common problem this time of year for pond keepers.


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Laguna Clear Flo Pump and Filter Kits

Laguna Clear Flo Pump and Filter Kits

Pond Planet Direct are proud to be registered as an Laguna Elite Dealer.

Laguna is dedicated to innovative product development and customer satisfaction. Their extensive product range and superior quality reflects a commitment to anticipating and fulfilling the needs of pond enthusiasts.

Part of the Laguna product range includes the Laguna Clear Flo-Kits. These pump and filter kits are made up of an ideal combination of a Laguna Max-Flo pond pump and a Laguna Pressure-Flo pond filter.


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Be Prepared This Spring

Spring will soon be here!

There are a few maintenance jobs you should do in preparation to get your pond ready for the forthcoming better weather:

Check List
  • Visually check that all pond fish look healthy with no visible marks or sores. Use an appropriate Pond Treatment if required.
  • Check for any potential equipment damage that could have happened during the cold weather. Ice and frost can cause damage to pumps, filters, UVC’s, waterfalls, fountains and flexible pond hoses.
  • It is also a good idea to check the pond for any damage. Ice and Frost can also cause damage to pond liners and pre formed ponds.
  • Remove silt and debris that might have blown into the pond over the autumn and winter months, such as leaves, with a Pond Vacuum.
Spring Clean

Pond Vacuum’s such as the Oase Pondovac Classic or Oase Pondovac 4 make spring cleaning a breeze.


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Winter Care

With Winter just round the corner now is the time to be thinking about overwintering your pond.

Pond Heater is an essential addition to your pond during the winter period and are now available from Pond Planet Direct.

During the winter months, a short spell of frost will not cause concern to most pond owners, but a severe, prolonged frost can cause pond stress. If the entire surface of your pond ices over for more than a few hours, then the oxygen supply is severely depleted and toxic gases can build up poisoning the pond inhabitants.

A Pond Heater such as the Oase IceFree Thermo 200/330 or Bermuda Pond Heater will keep a small area of your pond free from ice, this will allow the harmful gases to escape and let oxygen into your pond. The ice free water will also attract birds to drink at a time when ice-free water is not readily available to them.

Oase IceFree Thermo 200

Pond Heaters Like the Oase IceFree Thermo are used to keep a small area of the pond clear of ice.

Warning: Never use an object to smash the ice as the shock waves caused by this could stress your fish, resulting in fatalities! Do not pour hot water on the ice either, as this could cause temperature issues and is only a temporary solution.

Don’t forget that fish are not fed when the water is too cold, as fish cannot digest food when the water temperature falls below 4 Degrees Celsius. Make sure to use a Wheatgerm Fish Food between 4 and 10 Degrees Celsius as it is much easier for your fish to digest.

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Autumn Pond Care

With Autumn well under-way the change in weather signals the need for winter preparation.

Ponds Should be covered with a Pond Cover Net to prevent leaves and other debris from collecting on the pond surface and polluting the water. This will help reduce the build up of sludge which in turn helps maintain good water quality and minimise algae growth for the season ahead.

Alternatively make use of a Pond Skimmer to remove debris before it sinks to the pond base.

Pond Skimmer

Pond Skimmers are fantastic for removing leaves and debris before they sink to the pond base.

Deep water pond plants such as lilies should also be pruned this time of year to prevent the leaves and stems from polluting the pond as they die back for the winter. Pond Pliers and Pond Scissors make this task much easier and save you having to get wet.

Pond Pliers and Scissors

Pond Scissors can be used in conjunction with Pond Pliers to make deep water plant plant pruning a breeze.

Don’t Forget Wheatgern Fish Food should be fed to all pond fish when the pond water is between 4 and 10 degrees Celsius. Below 4 degrees Celsius you should cease feeding pond fish altogether.

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