Scientists poured pink dye into Florida’s Lake Jackson to trace hidden water; about 1 month later, it appeared at Wakulla Spring through limestone caves
In 2017, scientists poured Rhodamine WT pink dye into Porter Hole Sink under Florida’s Lake Jackson; 35 days later instruments picked it up at Wakulla Spring through limestone caves
In 2015, University of Florida scientists poured 5 gallons of red Rhodamine dye into Silver River’s main spring vent to track how water moved as the clear spring run turned more algae-green