Close to ineffective. Unless you tint that water to block almost all sunlight, and you almost can't do that on shallow growth areas. Just a lot of money spent on a growth limiter. Even worse, it can eliminate some blooms that compete with it for nutrients.
Grass Carp eat around it.
Rake it out, remove the bulk of the mass out of the pond. Look for best, or most cost effective herbicide containing active ingrediant Diquat dibromide. I prefer that over Fluridone. Apply to kill fragments and emergent growth. Repeat.
Last edited by The Pond Frog; 04/11/10 12:20 PM.
