Freshwater Tropical · Goldfish · Koi & Pond · Marine / Saltwater
Cloudy Eye
Hazy or opaque film over one or both eyes — usually a sign of bacterial infection or chronic poor water quality.
Severity: Moderate
Cloudy eye is a generic symptom. It can range from mild corneal cloudiness (often water-quality related) to full pop-eye with severe bacterial disease.
Causes
Ammonia or nitrite burn, sustained pH problems, physical injury followed by bacterial colonisation, internal mycobacteriosis.
Treatment
Address water quality first — 30–50% water change, check ammonia. If cloudiness persists, treat with **Nitrofuracin Green** in the water for 7 days. Severe pop-eye warrants medicated food with kanamycin.
Recommended medications
Antibiotic
Nitrofuracin Green
Wide-spectrum antibacterial and antifungal. Excellent for new fish, ammonia burn, transport stress, and quarantine.
from $32.00
Recommended equipment
Hardware that prevents, monitors, or treats this condition — listed with the most important first.
Water Testing
Nitrite / Nitrate Test Kit
Nitrogen cycle imbalance, chronic stress
from $200–$500
View details →
Prevention
Stable water parameters; protect against sharp tank décor that can injure eyes.