Not much way of maintaing the FHM they move too slowly. I Love the naiad species it is not too dense as with exotic species. However you can quickly get too much of a good thing. I like to see less than 30% coverage and 15% ideal. Easy to kill with reward. I suggest spot treating areas where you do not want it. IF too much hazzle adding a few grass carp might do the trick but keep in mind they can eliminate all of it as well highly preffered by them as well.


Greg Grimes
www.lakework.com