I have filmentous algae. Directions on cutrine plus say to measure area of algae and then depth to come up with acre foot and then it gives you a chart to figure how much to mix with water.

I don't understand this?? The algae is floating around on the surface of the water. At any given time it may be where the water is one ft deep and an hour later it may be blown over to where the water is five feet deep, so I don't understand why water depth is a consideration.

Is there an amount that I can just mix with a gallon of water and spray the algae. I.e. Mix a quart with a gallon, etc.? As I said I do not understand why I should figure water depth since algae is just floating on the surface of the water. Also, when you spray you are supposed to just use droplets and not a fine spray right.

Thanks