Koi Care & Health
Koi keeping starts with stable water and early health awareness.
Care and health belong together: stable water, sensible feeding, quarantine, observation, and early action prevent most serious koi problems.
| Routine | Suggested frequency | What to record |
|---|---|---|
| Observe fish | Daily | Appetite, breathing, fin position, isolation, flashing, surface behavior. |
| Check temperature | Daily during feeding season | Water temperature before changing food amount. |
| Test ammonia/nitrite/pH | Weekly in stable ponds; more often after changes | Actual numbers, not just "good" or "bad". |
| Clean mechanical filter | As waste accumulates | Date, amount of sludge, flow improvement. |
| Review stocking and feeding | Monthly in warm season | Fish growth, food volume, nitrate trend, oxygen stress signs. |
Professional Video
Watch: safely adding a new koi
New fish are one of the highest-risk moments in a pond. This Sacramento Koi video supports the quarantine and acclimation message: handle transport stress carefully and do not rush a new koi into the main pond.
A practical first framework for water quality, feeding, observation, and pond habits.
Feeding Koi food selection guideChoose staple, wheat germ, growth, high-protein, and color food by water temperature and pond capacity.
Filtration Why filters matter more than pond size aloneUnderstand mechanical and biological filtration before adding more fish.
Breeding Koi breeding, fry care, and selectionParent selection, spawning setup, egg care, first foods, fry grow-out, and culling decisions.
PreventionDisease prevention checklistWater testing, oxygen, quarantine, stocking density, sanitation, and daily observation.
BiosecurityQuarantine and KHV riskIsolate new koi, use dedicated wet tools, and avoid moving risk into the main pond.
SymptomsCommon symptoms and first checksFlashing, clamped fins, ulcers, white spots, gasping, lethargy, and what to check first.
Disease guideParasites, fungus, and bacterial infectionsCase-style notes, real disease photos, symptom logic, and professional references.
TreatmentResponsible treatment kitTesting, quarantine, aeration, salt meter, and treatment categories with product links.