I've read claims that a few mallards can help control algae and duck weed. I have had years where there are only accasional visiting wild mallards to years where I've raised a half dozen mallards that lived in my 1/2 acre pond. I've never seen any noticable reduction in FA or duck weed as a result of having the mallards. I know they eat some of it but it can't be much.


Gotta get back to fishin!