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Summer Sale in Koi Hacienda

Summer Sale … all the famous brands are launching their Summer Sale 2016.

Koi Hacienda, too.

After having participated with great success during the commercial key dates such as “Black Friday” and “Cyber Monday”, Koi Hacienda offers you THE possibility to have real Japanese jewels swimming in your pond. At very reasonable prices.

40% discount on  1 year koi  inserting VERANO1 during your online shopping

30% discount on  2 year koi inserting VERANO2 during your online shopping

This offer is valid from 1st till 10th July 2016 and / or end of stock.



estanque koi filtro gravedad

Which filter for my koi pond ?

Which filter for my koi pond ? 

Before becoming a koi lover, you have to become a water manager.

A very wise expression.

Which nobody wants to hear.

Most people prefer to jump directly to the adventure of having many colourful jewelry swimming in the water.

Many times it goes well.

For a long time.

But there will be always THE moment. 

The moment of green water.

The moment of koi with injuries.

Perhaps even the moment of dead koi.

And then you will loose the joy of having koi.

You would not be the first to acquire this position.

I know we repeat ourselves. We – from Koi Hacienda – do not get tired in insisting, that to enjoy koi, you need to plan from the beginning the project.

Patches and odd jobs – generally – do not last long.

The filtration system – a part of the construction of the pond – is the heart of koi project.

Which filter for my koi pond is an essential question that every koi lover should ask BEFORE starting the project.

Which filtration system depends on several factors:

  • available place
  • pond volume and koi population
  • your own budget

Good News: It is impossible to have a too big filter  

a) available place

Generally gravity filters tend to occupy more room than the pressure filters. Depending on the type of gravity filter, you will have to take into consideration an excavation next to the pond.


b) pond volume and koi population 

Here we are in the same situation as with the chicken and the egg – what first? Do you decide first the dimensions of the pond and then adapt the amount of koi? Or do I know that I want to have 12 koi?

There are exact formulas to calculate number of koi, feces, the square metres of biological material of the filters, but I will not go so far today and talk only about general rules.

Traditionally 1,000 litres are calculated so that a koi can develop perfectly (perfectly in this sense means a good body shape and a size of 1 meter). So you could also say 1,000 liters for 1 meter koi – the equivalent for example for 5 koi of 20 cm. But of course … we must bear in mind that koi – under optimal conditions – often grow quite large. In two years, those 5 to 20 cm could have reached 40 cm. Then what ? Respecting the rule, you should remove at least 2 …

Nor it is plan to put 1 koi of 10 cm in a pond of 1,000 litres because in about 7 years it might have grown to  1 meter.

With this information I only would like to put you on enquire for the topic “pond volume / quantity of koi.”



Attention: In the packaging of filters we read information as “up to 18,000 litres.” These guidelines generally refer to the volume of water without fish. If we study the product thoroughly we see that it is valid up to 7,500 litres with fish and 3,000 litres with KOI. So … of 18,000 liters we are very far away.

c) your own budget

Gravity filters are usually more expensive than pressure filters. If you opt for a gravity filter camouflaged in the ground, after having built the pond, excavation usually is very costly. 

Often appearances are deceptive: While being cheaper at first, the daily costs of a pump of a pressure filter may end up in unpleasant monthly electricity bills. Saving in the beginning – is expensive in the end.

In order to give an answer to “Which filter for my koi pond” let’s look now different to the types of filtration systems.


  1. pressure filters
  2. gravity filters
  • at the same water level as the pond
  • above the water level of the pond 

1. pressure filters

FullSizeRender 32_result

Pressure filters are filters that can be installed both – below and above – the water level of the pond.

They absorb water from the pond and pump it through the filter and again into the pond.


2. gravity filters  

a) at the same water level as the pond
 FullSizeRender 31_result

A gravity filter is a filter which is filled with water due to the principle of gravity. The great advantage of a gravity filter is that it does not require a pump as powerful as pressure filters as it does not have to suck the water to the filter.

Typical gravity filters have usually several cameras with different types of filtration material occupying quite a lot of  room.

A gravity filter is the best choice for medium and large ponds.


2. gravity filters 

b) above the water level of the pond 

FullSizeRender 33_result

Here we talk about a filter whose filtered water returns to the tank through the principle of gravity. The great advantage of a gravity filter is that it does not require such a powerful pump and pressure filters and – in this case – does not have to transport the water back to the pond.


Which filter for my koi pond ? With any filtration system you will find basic and sophisticated products. As we mentioned: There can not be too large filter. But there may be too small filter !!!!

The result is unhealthy water, koi diseases, green water and plenty of maintenance work which often takes away the desire to have koi.

The systems described above can be improved with a pre-filter before the filter (for the big pieces of dirt) and a sand filter after the main filter to filter even the smallest particles.

Recommendation: Most filtration systems come from northern Europe. There are complete sets including UV lamp … the set is then designed for the environment of northern Europe – so the power of the UV lamps is not enough for ponds in Spain (much less in the south of the Peninsula). We always recommend using the triple of what is recommended on the packaging of the manufacturers.


koi shusui

Shusui & Sushi

Shusui & Sushi

We all know that the Japanese name of our beautiful koi are quite difficult … but now on top we mix with another word: Shusui & Sushi.

Our intention is not to confuse you.

We would like you to learn the difference in a funny and perhaps a little bit provocative way (like that you will retain the learned lesson easier).

Ok – let’s see … what is the difference between Shusui & Sushi ?

Shusui is a variety of koi.

And Sushi is a special Japanese style to prepare raw fish.

Every year on June 18th the International Day of Sushi is celebrated.

And we in Koi Hacienda – we decided to celebrate the Day of Shusui.

The Shusui is the doitsu (= without scales) variant of an Asagi. This variety is a cross between a scaleless carp with Asagi. It was the first doitsu variety of koi.

To “judge” a Shusui you should take into consideration the following criteria:

  • the dorsal scales should be dark blue
  • the dorsal scales must start behind the head and come uninterruptedly to the tail (in front of the dorsal fin there are single scales, along the dorsal fin the scales are divided into two lines and behind the dorsal fin is again a line only)
  • the dorsal scales should be well ordered
  • the head should be light blue or white
  • the pectoral fins should have red
  • they must have red on the cheeks

Obviously koi that meet all these criteria are of high quality and have their price. Koi Hacienda try to adapt to the Spanish public that gradually is assessing the quality koi and is gradually understanding there is a price to pay for it.

Shusui & Sushi

Shusui where you con appreciate the organisation of the dorsal scales

In hard water and / or with a high pH, it is almost impossible to avoid black spots (both on skin and scales).

There are different types of Shusui:

  • Hi-Shusui: a Shusui whose red exceeds the sideline
  • Hana-Shusui: is a Hi-Shusui with dark blue scales in the two lateral lines
  • Ki-Shusui: instead of the red is the color yellow
  • Pearl-Shusui: with silvery scales

Take advantage of the offer on June 18th and purchase Shusui Koi Hacienda with 30% discount:

Shusui high quality (2 years)

Shusui standard quality (2 years)

and several 3 year Shusui