At Koi Water Garden, we are able to offer competitive prices on not only high quality koi, but also on koi related goods including many types of pond additives. We only stock products that we have tried and tested and indeed continue to use with our own Koi stocks.

Contact us

Last Updated 25th July 2010

The Old Rectory, Risborough Rd
Gt Kimble, Nr Aylesbury
Bucks   HP17 0XS
Phone/Fax 01844 342390

** Please note our normal opening Hours - Thursday to Saturday  9.30am - 5.00pm. Sunday 9.30am to 12.30pm. -  Monday to Wednesdays inclusive closed - visiting by appointment only.**

Please note that calculated carriage charges apply to deliveries to England, Wales and parts of Scotland.  For deliveries to Scottish Highlands, Ireland  and Islands please see our dry goods delivery charges page or contact us for a carriage quotation.

NT Labs Pure high-grade ultra fine powdered Montmorillonite Clay contains many naturally occurring minerals and in our Koi ponds provides many trace elements that Koi need and which is abundant in natural mud ponds.  Helps to remove solid waste from the water, improves skin quality, appetite and Koi health.  Can be added to food as well as to the pond water for maximum advantage and aids digestion when used directly with food.

Dose 30 - 50gm per 1000 gallons per week.  Cannot be overdosed

   NT Labs Mediclay

Refresh rock is the Japanese original and most natural form of Montmorillonite Clay which contains many naturally occurring minerals and trace elements that Koi need and which is abundant in natural mud ponds in Japan.  Improves water quality by helping to buffer water acidity, and binding many common toxins to render them harmless to fish life. Really improves skin quality and lustre, appetite and overall Koi health.  Hang in the filter in a filter net bag and the Refresh will slowly dissolve over time so continually adding these important minerals back to the pond water.

Cannot be overdosed

Refresh Rock

Izeki Super clean C is a special mineral that has been developed to specifically improve water conditions.  Its primary purpose is to prevent the formation of organic matter in the pond. A build up of organic matter reduces oxygen levels, and super clean C is designed to prevent this and keep oxygen levels high. It helps to reduce the levels of suspended solids by flocculating tiny particles of organic matter. It will also absorb calcium ions, so will help to reduce water hardness which in turn will improve the skin quality of Koi. The dosage varies with water hardness, but because Super clean C is a mineral, it cannot be overdosed

Dose 5 gms  1000 gallons per day in soft water. 
Dose 10 gms  1000 gallons per day in medium hard water. 
Dose 15 gms  1000 gallons per day in very hard water. 

   Superclean C

Izeki magic powder is a mineral additive which is designed to be used with super clean C (above) and is designed specifically to improve white skin on Koi, increase their appetite, lower water hardness and improve a Kois resistance to disease. How does it achieve this? - Technically, magic powder aids the synthesis of proteins, improving food assimilation and it absorbs calcium ions. It also emits infrared light at a particular wavelength that helps create smaller water molecules - a condition known as 'water activation'. As a result water is able to hold more oxygen.

Dose 5gm per thousand gallons weekly

   Magic Powder

Bio Protect (formerly Stress coat) has been specifically designed to protect koi from harmful toxins in water and is ideal to use when quarantining new koi or for transportation to help overcome the stress associated with poor water or transit.  We use this marvellous product when transporting koi to our customers. Contains Aloe Vera to help sooth and protect the body and gills from many common irritants. Will also neutralise Chlorine and Chloramines in tap water and protect Koi from skin and gill damage in less than perfect water. This another product which does exactly what it says on the tin!.

We are delighted to be distributors of one of the most amazing products we have come across for years - Hydra manufacture a range of pond additives for ornamental lakes, fish farms and of course freshwater fish ponds. Hydra Crystal is a mineral based clay like powder that when added to the pond water rapidly clears murky water caused by all organic suspended material, including green algae. What's  more the product works rapidly, within 24 hours to give you the most amazingly clear water. The principle on which the powder works is ion exchange, so as well as flocculating tiny solids and algae, hydra crystal absorbs nitrites, phosphates and many other pollutants. Hydra crystal is completely safe to use with all fish and plants.

• Mineral base powder 100% biodegradable.
• Removes green and cloudy water - very rapidly - results can be seen in hours.
• Each very small powder particle has millions of nano size holes, which by ion exchange help absorb nitrites, phosphates and other pollutants in the water.
• "pH Neutral" has no effect on waters pH.
• Maintains clear healthy clean water.
• Activated by water it immediately starts to electrically charge individual algae cells so that they clump together, they now sink to the bottom of the pond were either the filter system will clear them or if there is no filtration, then they will decompose over time.
• Controls and prevents green water and cloudy water for extended periods.
• Does not affect biological filters or pumps. Safe on concrete and synthetic liners.
• Harmless to all fish, birds, reptiles, invertebrates, humans, mammals, animals and water plants.  
• UV lights can be left on during treatment.

Maintenance Doses - 800g treats: 40,000 litres  (8,800 gallons), - 3.5 kilos treats: 175,000 litres (38,500 gallons) - 16 kilo treats: 800,000 litres (175,800 gallons)

We are distributors of the world renowned Microbe lift products from Eco Laboratories in the USA.  These naturally cultured products all contain different blends of aerobic bacteria, photosynthetic bacteria (those that use light as a source of energy), anaerobic bacteria and chemosynthetic organisms.  Eco laboratories are the only company that have been able to culture these products, in house, and largely in the containers they are sold in. This is because the organisms only grow synergistically, representing a virtual ecosystem in a bottle.  These cultures coexist and flourish, and this is the way they work in your pond - together,  and this is also why the products have massive shelf lives - up to 5 years.

As they are all cultures of naturally occurring forms of micro-organisms, they cannot be overdosed, are all completely safe to use with all pond fish and plants, and importantly they can be used together, if required, as they are not chemicals.

Most importantly, these products are not only among the very best of their types on the market, but they are super value for money when compared with (claimed) competing products and added to the long shelf life are frankly simply light years ahead of other products in this market.

Use over a 4 week period dose 100ml per 1250 litres.

Use over a 4 week period dose 100ml per 2000 litres..

The level of water hardness is important in you Koi pond.  It is generally accepted that 'hard' water is better for Koi than soft 'water'. Hard water locks up any toxins in the water, helping prevent them from detrimentally affecting fish.  Hard water also helps the osmo regulation process employed by all fish to regulate fluid and mineral salt levels in the body.  This process is more difficult for Koi in soft water, and can put undue strain on the fishes kidneys.  It is therefore important to maintain water hardness at minimum levels, both in terms of KH, otherwise known as calcium hardness or Alkalinity and GH, general hardness, a measure of the total dissolved salts in the water.   In particular, a low KH in the pond can allow pH to fluctuate wildly and causes instability in water chemistry and can stress fish very quickly.  NT laboratories have now developed two special mineral products which can quickly help overcome soft water problems and increase both KH and GH to safe and recommended levels.

Tell me more about hardness and osmoregulation

Dose is 50gm per 75 gallons of pond water to raise the KH/GH by 3 to 4 points.

Cloverleaf blanket weed answer

Cloverleaf blanket weed answer is the sure and safe way to rid your pond of blanket weed.  Not a chemical, but a unique blend of minerals and enzymes that creates an environment unsuitable for blanket weed.  Guaranteed to work every time.  Completely safe for all aquatic life including pond plants. Recommended treatments monthly during the summer.  In our opinion this product really is worthy of the name.

The 0.8kg pack is sufficient for a single treatment of 2200 gallons of pond water (or a 2 month course for a 1000 gallon pond)

EA stop blanket weed

EA stop blanket weed marketed by Evolution Aqua is another safe way to rid your pond of blanket weed.  A treatment that affects calcium structure which blanket weed relies on to thrive, it also inhibits the spread of the spores.  We were very impressed with the results of this new product.  It works fast, and does not leave an unsightly mess of dead or decaying weed - its almost as though the dreaded weed just disappears without a trace.  Does not contain copper and is completely safe for all aquatic life including pond plants.  Recommended treatments monthly during the summer. May temporarily alter pond water pH

Dose 50gm per 1500 litres ( 680 gallons) of pond water. 1kg is sufficient for a single treatment of 6800 gallons of pond water (or for 3 month course for a 2200 gallon pond)

(c) Copyright 2005 Koi Water Garden Ltd. All Rights Reserved.