Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Cutrine Plus question

From website:

To apply Cutrine-Plus Liquid, determine the volume of water to be treated in acre-ft. For Filamentous and Planktonic Algae, use 1 gallon of Cutrine-Plus Liquid per 1.5 acre-ft of treated water. For Chara, use 2 gallons of Cutrine-Plus Liquid per 1.5 acre-ft. of treated water. Dilute with a minimum of 9 parts water. Spray uniformly over the water surface as a rain of coarse droplets. Contact with Filamentous Algae will be improved by breaking apart heavy surface mats before application.
For Hydrilla, use 2 gallons of Harvester Liquid mixed with 3 gallons of Cutrine-Plus Liquid per 1 acre to be treated. Dilute mixture with a minimum of 9 parts water and apply as a surface spray or by underwater injection. Add Cygnet-Plus Liquid to increase penetration and contact.
Treat heavy infestations in sections of 1/3 to 1/2 of total algae volume to avoid oxygen depletion. Allow 5 to 7 days before continuing to an untreated section.