The extension guy was 100% wrong, Diquat will not affect Chara.

Get some cheap test strips for an aquarium and test the water for alkalinity. You want the reading to be above 40 for the fertilizer to work.

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).