In 2019, at a cost of 1 million dollars, an aeration system was installed in Lake Carmi in Franklin to address excessive phosphorus levels and cyanobacteria blooms. Recently, Vermont Department of Environmental Conservation officials determined the aeration system made conditions worse, and will begin to remove the system from the lake.

You can read about this in this VT Digger article: “State to remove Lake Carmi aeration system after determining it made cyanobacteria blooms worse” by Corey McDonald.