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Pond size
Filtration
New additions
Treatments in last 21 days
Fish behaviour
Breathing rate
Eating
Number of fish affected
How long has problem existed
Water parameters
pH
ammonia
nitrite
hardness
Physical examination
Skin (lesions, ulcers, redness, swellings)
Fins (erosion, redness)
Skin scrape (parasites and numbers)
Diagnosis
Treatment