Koi Care Tips & Expert Advice

In professional Koi health care, the most important question is not: “What medication should I use?” The correct question is: “What is causing the fish to become sick?” The wrong medication can weaken an already stressed Koi. Correct diagnosis, water quality, oxygen, and biosecurity must come first. 1. THERMAL SHOCK Common Signs Sitting on the bottom Clamped fins Loss of appetite Sluggish behavior Fish gathering in one area Disease appearing shortly after a major weather chan

1. Carbon dioxide toxicity. Many keepers think only about low oxygen, but excess CO₂ can also make fish lethargic, unresponsive, and prone to hanging near the surface, often with acidic water. This usually happens when gas exchange is poor, organic load is high, or aeration is too weak to blow off CO₂ efficiently. The right response is aggressive aeration, better surface agitation, and removal of excess decomposing waste that is driving the gas load. 2. Hydrogen sulfide poiso

At our koi farm, every fish represents a commitment to Japanese excellence, precision selection, and long-term aesthetic development. Authentic Japanese-grade selection standards: Each koi is evaluated based on body conformation, skin quality (shiroji purity), beni depth, sumi stability, and future growth potential—following the principles used in top Japanese koi farms. Selective breeding mindset, not mass trading: We prioritize quality over quantity. Every koi is indivi

Tosai is a crucial stage in the growth of koi. During this period, they grow rapidly. To ensure your koi thrive, it's essential to get things right from the start. The most important principles are: stable water, high oxygen levels, and proper feeding. Clean and Stable Water is Key Tosai grow quickly, but they are also very sensitive. Dirty water, low oxygen, or significant fluctuations can slow their growth immediately. Here are some key points to remember: NH3/NH4 and NO2 l

If you are new to koi keeping, remember this first: Koi don’t die from lack of medication; they die from poor water. Good water is the foundation of a healthy koi pond. You can have the most expensive fish, but if the water is unstable, they will lose color, get stressed, grow slowly, and become vulnerable to disease. Essential Water Parameters to Test A proper koi test kit should include: Ammonia (NH3/NH4) – must be 0 (highly toxic) Nitrite (NO2) – must be 0 (very toxic) Nit

Drum → J-mats → Moving Bed → Ceramic Media → Oyster Shell → UV Light → Baki Shower → Pond Simple explanation: Drum: removes large waste, fish waste, and leftover food J-mats: trap fine debris Moving Bed: main biological filtration, helps process ammonia and nitrite Ceramic Media: adds more surface area for beneficial bacteria Oyster Shell: helps maintain KH and stabilize pH UV Light: helps reduce green water and floating algae Baki Shower: increases oxygen, reduces DOC

1. Bring the fish indoors immediately. Do not leave the box outside in the sun, cold, or wind. 2. Check the fish upon arrival. Some light stress after shipping is normal. 3. Float the unopened bag for 15–20 minutes. This helps equalize the water temperature. 4. Do not pour bag water into your pond. The shipping bag water may contain ammonia and waste buildup. 5. Transfer the fish into a clean tub first. Then gently move the fish into your pond or quarantine tank. 6. Do not fe