I think it’s from an overload of phosphate and other ingredients in fertilizer that are throwing off the balance in all creatures, not just fish
“I think it’s from an overload of phosphate and other ingredients in fertilizer that are throwing off the balance in all creatures, not just fish”
The article says injury.
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Silver Glen Springs is a first magnitude spring that maintains a year round water temperature of 72 degrees Fahrenheit. The spring discharges about 65 million gallons of water per day that comes from two large vents. The spring and run encompass about 22 acres of water. The springhead is 200 feet in diamter and the spring run flows 3,300 feet into Lake George, the second largest lake in Florida.
The water flowing from the spring has been one of the best in ecological quality from among Florida’s 600 springs. The water coming from the vents is high quality but the quality changes as the water flows into the spring run. Already designated as critical habitat for the manatee, the spring and run have the potential to serve as a major manatee refuge. However, manatee use has been limited due to a high degree of human activity and damage to aquatic vegetation.

I drink gobs of phosphoric acid every day, and I still don't have flat feet.