Goldfish Hemorrhagic Septicemia: Salt & Water Quality

6 goldfish moved to small pond after suspected hemorrhagic septicemia from overcrowding. Tetracycline in 80-gal tank helped briefly, worse in pond. Husband fears meds harm frogs/birds. Pond too small to winter. Asks: treat pond?

Stop Medicating—Fix Environment

1. STOP FEEDING.
2. Test nitrite/ammonia. If >0, daily 20% water changes (dechlorinate).
3. Add POND SALT: 1 lb/200 gal (99% pure: solar, kosher, pond salt—NO table salt). Helps osmoregulation, heals gills.
4. Remove plants during salting (salt kills plants).
5. Maintain salt with water changes.

Why Not Tetracycline?

Already stressed fish + antibiotics = higher mortality. Salt + clean water is safer, supports immune system.

Do Not Move Fish

Would spread disease. Keep isolated.

Salt bath is the classic, low-risk support for septicemia.