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The Koi Story Fish Farm

Where Your Fish Tails Become True

The Koi Story Fish Farm was created by May Weinstein out of the love of Koi. 

This is our first season and we are so excited as we are working with great Koi breeders around the world. Our belief is in high quality whether it be Koi Koi food or any other supplies for your pond or tank.

This is a family business with one thing in mind the Fish. All of our fish are quarantined before the sale, the utmost importance to us is to have healthy fish and happy customers that will return and refer friends and family to us.

Koi ponds can be a relaxing feature to any home. So, when designing our ponds, it is important to know. The environment that the pond will be in, Water Quality is the most import part of a healthy ecosystem. Your pond will bring in more wildlife to the areas some good and some not so good. Some will be Predators which you will see, and others will not be seen unless under a microscope. In fact, there are good bacteria for your ponds natural cycle. That is why water quality is far more important than crystal clear water.

Let's talk about filtration; there are Two types of Filters Mechanical and Biological.

Mechanical Filters separates solids from the water. These are good filters to clean your water, however, as I said above clear water is not always clean water. These Systems work like sweeping your floor all the big stuff is moved away and gives the appearance of a clean floor. But why do you mop after? You want to clean what you cannot see. So, you use a detergent of sorts. This is where the biological filter comes in. It is your water cleaner. Removing toxins from the pond you cannot see but with water testing you know are there. The biological filter does not use detergent but good bacteria to decimate the chemical toxins that are produced from fish waste old food and organic material such as decaying plants.

There are many types of mechanical Filters: Bead Filter this filter is like your swimming pool filter that gathers solids that need to be flushed regularly. Bead filters do have a media that good bacteria will grow on but cannot be compared to a standalone biological filter system. Drum Filter uses a screened rotating drum that gathers solids in which they need to be cleaned regularly. Technology is advancing as there are now drum filters that automatically clean and flushes solids out a discharge line. The Vortex filter acts like uses centrifugal forces where solids are pushed to wall of filter and spun down a conical basin which gathers solids and regularly needs to be flushed out.

Biological filters can just be as simple as a waterfall basin filled with biological media in which the good bacteria grow. These systems are either pressurized or gravity fed.

Bog filtration is an excellent way to incorporate plants into your pond for natural filtration.

The plants are planted in gravel medium, in which water is pumped up through it as water passes over roots the plants feed on and clean the water from those toxins that will harm your fish.

Depending on size and load you may just use a biological filter or a system that incorporates Bead Vortex and Biological

The reason you need biological filtration.

There is a cycle which affects water quality.

  1. Fish > Fish Food > Fish Waste > Ammonia > Nitrites > Nitrates
    How can we control this before we even put our fish in our ponds?
  2. Use of a biological filter and pump rated for the total volume of your pond.
  3. Good biological filter media.  This is what the good bacteria grow on and colonize.
  4. Nitrosomonas and Nitrobacter are among the good bacteria you want to colonize your biofilter.
    1. Nitrosomonas break down ammonia into nitrites.
    2. Nitrobacter then breaks down nitrites into harmless nitrates. These nitrates are an excellent food for Bog plants, thus creating pure Homeostasis.

You must always test your water as there are off shoots to this cycle which can raise and lower PH

Which can also harm and kill your fish.

****You can purchase many brands of Bacteria; You can purchase both online but there is a huge difference especially when first colonizing your biological Filter. Living bacteria usually has to be shipped overnight and used immediately then refrigerated. This is the fastest way to seed your filter. Suppliers of other bacteria use additives to keep bacteria alive for long shelf life. I have had good experience with those under right conditions however can take 4-6 weeks to seed. I have had a great experience with live bacteria in two days normalizing my ammonia and nitrite counts. Remember you need some fish in the pond to feed their waste for the bacteria to grow. Or use chemical additives like ammonia. I prefer the natural way with fish. Water changes will need to be done if you get any chemical spiking.

**If using any UV or ozonator turn off for 72hrs. For bacteria colonies to form.

*** Make sure you have an aeration line in your biofilter for the bacteria to flourish.

For the beginner, this might seem daunting but just be steadfast to your water testing and you will have happy fish that will give you years of enjoyment.


Introducing new fish to your pond can be disastrous and even deadly unless you know the procedures who you buy them from.

A hospital tank of 150 gallons should be set up with a biofilter but needs to be ready for your quarantine. You can always have few goldfish for your quarantine tank to keep the filter properly seeded. The period of quarantine should be 21-30 days. The Tank should be heated to 74-76 degrees and aerated well. Salt can be used to help destress the fish and help kill some types of bacteria and parasites. Salt should be added at 2 ½ pounds per 100 gallons. This salt needs to be iodine free. It is important to check the water quality and fish behavior every day. The most import thing to see is how the fish is reacting, are they flashing (when a fish turns to side rapidly looking like a flash from reflection), scraping on side or bottom of tanks, doing a corkscrew motion, all can be causes of bacteria or parasites. There are many different parasites and bacteria that are resistant to salt, so do not think this is a cure it is just a helpful benefit from the addition of salt. Observe any ulcers, spots, redness or fraying fins these are just a small example of what to look for during quarantine.

*Your tank should be netted as fish to a new surrounding might jump out.

It is important to recognize these characteristics and sample your fish for microscopic viewing.

At this time, I will refer you to a guide Koi Health And Disease 2nd edition by Erik L. Johnson, D.V.M.

This book is for every koi enthusiast. A wealth of knowledge can be gained by this Book.

Supplies of the Koi Keeper

Water testing kit drops better than testing strips but for convenience, the strips are for a quick check.

Live Bacteria should always be on hand and should be added after each water change.

Salinity tester. This is important so you know the correct dosage of salt in your water. Koi-Medic has a very nice electronic tester.

Salt a 40lb bag of non-iodized salt.

A tub to see and examine your fish in a less stressed environment.

Nets: a Round net for catching and Koi Sock for removing. Or put in a large tub in your pond half filled with water. If you must handle the fish always point the fish in the direction of your body. Use one hand under the head having your thumb and forefinger web space cradling the pectoral fins. Then with your other hand

Koi are very fragile think of their fins like silk and their bellies as sensitive as suede marring the fish as easy as rubbing suede the wrong way.

Koi Feeding and Food

Winterizing Your Koi

Spring Opening

Member of the Tri-State ZNA Koi Club