Conner;4360012; said:I'm guessing you're not going to have the brightest, strongest lighting in there, so the grass shouldn't be growing very quickly. Plus, it would probably make the caiman feel safer to have a little bit of overgrown grass to walk through and hide in. It shouldn't get too tall depending on what type of grass you got. Plus it would look pretty natural.
Another option would be to just make a couple of small grassy area's separated by mulch paths. That would reduce the amount of potential grass trimming, and still leave plenty of open mulched space.
or just small grassy areas around the ponds, so as to not get as much of whatever other sediment you use in the water