Good Morning , I am a Biology teacher who has nevered kept animals in captivity. I have very large aquarium(6 feet by 18 inches by 20 inches) that I would like to grow plants in and perhaps have some small animals (amphibians, maybe) for added interest for my students. I really could use some suggestions about how to install plants, rocks, a small water feature, to create a really interesting habitat for plants and animals and my freshman level Biology students.....if any one has any ideas about how I might start this, I would really appreciate hearing from you!!! Have a wonderful holiday season.....c wimberly