Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants So...I've got some weeds...

The clearer picture indicates Chara aka musk grass - technically an algae but it looks like a submerged weed. If your water is soft with low alkalinity then you likely have Nitella not Chara; similar to Chara but prefers softer water which you could have in MN. Use management methods mentioned above for Chara. They can be considered a beneficial plants for fish habitat and cover. I don't like them because they usually form black anoxic sediments underneath the beds unlike most submerged aquatic plants.