Dave:

If it is a huge bloom, and you kill it, it may create a fish kill because of using up O2 during decomp. When you kill weeds, it frees up the nutrients for a bloom, so fert. isn't always needed. If visibility goes below 6" you should have aeration and other ways to oxygenate the water in place or you risk a fish kill.

www.hoosierpondpros.com


http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).