Hi I've written here before about our school permaculture gardening class getting ducks. I teach the program. They want the ducks to be in a courtyard where they have heavy duty landscape fabric down with playground mulch over it. This is all going to be removed this weekend to allow gardening in this area. This is where I need some help. I have chosen to get 2 drake call ducks for multiple reasons. ( noise level &size). We are constructing a duck pen yard . It will be a duckponics system I am including image below. They will have an enclosed raised wire floor pen in the rear of the duck house/pool area(not shown). But I am going to have a small yard area in front where door ramp drops. Now here is the question should I leave the heavy landscape fabric in this duck yard area using a type of bedding? At least it won't become a mud hole. Or remove it and attempt to plant grass there since they will only be spending 1/4 of their time at most in that area. Or do you have another suggestion? Help please options on this topic welcome.