Hi All, I am new to the forum and thought to seek some advice. We have Cayuga Ducks that we are in progress building an aquascape for. We have the in ground pond that we are working on and adding a little fountain behind it, as this is a section of the yard that we want for them only and for us to enjoy looking at. My question is whether cedar mulch will be okay to fill all grounds of their retreat with or should we leave the grass that is there? We are trying to be proactive in keeping insects down and odor. Also, any good tips on keeping the water mosquito free would be helpful! We are installing a UV sterilizer the pond. Thanks in advance!