Simple Care Guide

Pond Care

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Discover simple, step-by-step guides created by API® experts to help you
keep your water healthy and your fish thriving. Search for specific topics or explore our categories below  — from freshwater to planted tanks and ponds — to care routines, water tips, and product recommendations tailored to your setup.

Fish Problem Solving

Learn to recognize when fish need care and how to treat them. Normal behavioral patterns of your fish will reveal a lot when it comes to healthy behavior versus unhealthy behavior, so if your fish suddenly seem lethargic, lose their appetite, or begin hovering at the top of the pond when they ordinarily don’t, they are likely ill and need to be treated with the proper fish remedy. Don’t assume that your fish will bounce back from disease on their own – treat them as soon as you notice symptoms.

Choose from the categories below to learn more about proactive treatment and care for your sick fish. Browse information and solutions for accurately diagnosing and treating your fish, and get them back on the road to wellness quickly!

Like humans, if fish are weakened or stressed, their ability to fight off infection is compromised. Conditions which can trigger illness include poor water quality, poor diet, and overcrowded conditions.

Diagnosing disease in pond fish isn't always easy, but the most important step is to determine what kind of disease your fish may have contracted in order to use the proper treatment.

Fungus is a secondary infection resulting from bacterial disease, as fungus develops and feeds off of dead tissue left behind from ulcers, fin and tail rot, and other bacterial problems. Fungal infections usually appear as white, fuzzy growth on the mouth, skin, and fins.  

Symptoms of bacterial infections may include split, ragged, or eroded fins, white-tinted slime on eyes, eyes protruding from head, and slimy patches on body, red ulcers, and cottony growth on the mouth.