Category Archives: Koi Pond Tips

Protect Your Koi From The Midday Sun

So you think fish don’t need protection from the sun simply because they are always “submerged” in water, right? Well, perhaps you don’t know that Koi can get “sunburned”. That’s right; some varieties of Koi tend to loiter close to the surface of the pond or in shallow areas, and that leaves their backs very close to the surface of the water or, at times, even partially out of the water. Provide a shaded place on the pond, espec ...


Monitor The Diaphragm Or Membrane Of Pump

Regularly Monitor Your Diaphragm or Membrane Pump. Do you use Diaphragm or Membrane pumps, too? If so, then it would be wise for you to check them regularly, particularly the diaphragm or membrane themselves, because this is where cracks might develop due to “wear and tear”. ...


Use Only The “Widest” Of Tubes Or Pipings

Use Only the “Widest” of Tubes or Pipings. When constructing your pond and “laying out” the filters systems, pumps, and pipings/tubings, always go for the “widest” possible diameter for pipes and tubes for each device/system, and practice “uniformity” by using the same diameter for pipes/tubings for each device system. Any “narrower” pipe/tube in a particular device/system will be the “weak link” or “bottleneck” in th ...

Basic Safety Precautions In “Transporting” Koi

Just as we purchase water plants for our ponds every now and then, from time to time we also buy fishes. Koi are a particularly sensitive breed of fishes, so extreme care must be exercised in “transporting” them from their place of purchase to your pond. The most “basic” of these precautions is to make sure that the Koi have been “double-bagged” (i.e., placed inside two layers of plastic bags), and that two or more “extra” pla ...

Use Ball Valves Instead Of Gate Or Slide Valves

Use Ball Valves Instead of Gate or Slide Valves in Gravity Filtration Systems. Are you using (or do you intend to use) a Gravity Filtration system? If so, use Ball Valves instead of Gate or Slide Valves. Gate or Slide Valves cause too much resistance, which significantly reduces the flow in the pipe. One Gate or Slide Valve can cause as much resistance as three Ball Valves. ...

When Algae Growth Is Not Normal?

Sometimes, We Think That the Algae Growth In Our Pond is No longer Considered “Normal”. When is it Actually “Not Normal”? Well, for starters, algae usually grow in the Spring, so it is perfectly nor?mal to see algae growth in your pond at Springtime, and in most healthy, naturally-”balanced” ponds, the algae growth will disappear after a few weeks. But if it doesn’t, then it is no longer “normal”. Don’t worry, though; algae ...

Mare’s Tail (Hippuris Vulgaris) Is Excellent Oxygenating Pond Plant

Use Mare’s Tail (Hippuris vulgaris), an Excellent Oxygenating Pond Plant. Mare’s Tail (not to be confused with “horsetail”, a  pernicious garden weed) usually grows below the surface of a pond and absorbs some chemicals from the water, helping to keep it clear and earning it the distinction of being one of the best oxygenating plants suitable for ponds. Oxygenating plants play an important role in maintaining a pond’s health; as ...

Is There Such A Things As “Overfeeding” The Fishes?

Is There Such a Things As “Overfeeding” the Fishes? Would I Kill the Fishes If I “Overfeed” Them? This is a typical “beginning” pond owner’s question. A few people realize that fishes (and other animals) know no satiety when eating. There has never been a reported case of a fish dying from too much food, or even of one dying from lack of it, either (precisely because, in the absence of your “fish food”, fishes can always fea ...

Rinse New Plants Before Putting To Pond

Rinse “New” Plants First Before “Introducing” Them to Your Pond.  This is a common “rookie mistake” among new pond owners. Newly-purchased (or newly-obtained) aquatic plants should first be rinsed thoroughly. This precautionary measure helps circumvent the presence of any parasites or the growth of duckweed in your pond. “New” water plants can also be disinfected with some salts or Potassium Permanganate, to be added to a ...

Feeding Fish With A High-Protein Diet

Feeding ‘em a High-Protein Diet. Speaking of “overfeeding”, if you really have sort of a “penchant” for doing it, then feed them high-protein fish foods, preferably the easily-digestible kind (you may ask your specialty stores which ones are they), and with a 30 to 35% protein “level”.  Proteins in the fish’s diet ensure less waste and provide a lot of energy to the fish. The indigestible kind of protein is the one that is “ ...

Use Hard Water In Your Pond If You Want To Accentuate The “Sumi”

Use Hard (or “Harder”) Water in Your Pond if You Want to Accentuate the Black Portion (“Sumi”) of  Your Koi. Though there are some exceptions to this observation, this “tip” is not new among long-time Koi owners; water with high hardness has been observed to be very conducive to the “sumi” (or black portions) of your Koi. If there are only a few black spots in your Koi (or if there aren’t any), there try using hard water i ...

“Move” Newly-caught Koi With Soknet

The Japanese are so ingenious, they “invented” two kinds of net: one for “catching” Koi (the landing net), and another for “moving” the newly-caught Koi. This net for moving is affectionately called theSoknet, which translates in English to “sock net”. These Soknets feature a narrow but long sock-like mesh with just enough room to hold one or at most two Koi vertically. This way, the newly-caught Koi can be transferred from the ...

It Is Still Best To Remove Any Snow Buildup On Your Pond?

If you happen to reside in a place where it really snows, then perhaps you are no stranger to snow-covered ponds anymore. But instead of just “opening” a hole on your snow-covered pond, it is still best to try to remove the snow buildup, especially if there is still sufficient sunlight. This is so because sunlight is crucial for the general “health” and well-being of your pond’s fragile ecosystem: sunlight prevents mildew buildup, it ...

You Should Gather As Much “How-To” And “What-If” Information As You Can

Before You Actually “Start” Building and Furnishing/Populating Your First Pond… You should gather as much “how-to” and “what-if” information as you can and listen to the experiences of other pond owners and also of pond builders. Arrange visits to other ponds, especially those “sites” with multiple ponds of different sizes. If possible, ask (and maybe even pay) for a person from those sites to give you a tour of their facilitie ...

Ammonia Plays An Important Role In Your Pond

Despite its earning a “bad rap” as being toxic to fish, amphibians and invertebrates, Ammonia, both in its “free” state (NH3) and as the compound Ammonium (NH4+), still plays a key role in your pond, because it acts as a “food source” for the nitrifying bacteria in the Nitrogen Cycle, a very important (especially for plants) biological process. Nevertheless, you should still find a way to “monitor” or “control” the levels o ...

“Set Aside” Newly-Purchased (or Newly-Obtained) Fish

Whenever you bring newly-purchased (or newly-obtained) fish for your pond(s), follow the procedure of allowing them to “acclimatize” to your pond’s temperature BUT do not introduce them to the pond where you keep your “old” (or “current”) “stock” of fishes. Place them in a “quarantine” or “isolation” pond instead, and keep them there for a few weeks, so that any “hidden” diseases will manifest themselves. Make sure ...

Which Young “Kohaku” To Buy? 

If you ever find yourself wanting to buy (or given the opportunity to buy) a young Kohaku (a Koi variety that has a white — or “shiro” — body with red — or “aka” — markings, or “hi”, across its body), the “best buys” are the ones with the most red markings on their backs, because as they grow “older”, the reddish growth will eventually “break open” and shrink. ...