Items appropriate for the habitat are gravel, logs, and rocks. Plants do look nice but are unnecessary and will get destroyed by either the animal or your cleaning efforts. In building the water area you have to include some form of submersible heater. When it comes to feeding you will again need to refer to your local laws and regulations. In some places it is illegal to feed live animals to predatory pets so watch your step.
Crocodilians can consume a variety of foods.
Alligators and caimans, like any other animal, can suffer from nutrient deficiencies, such as calcium deficiency, and these can take months to manifest visibly. By then you could be looking at a costly vet bill. For your animal s comfort and maximum health a completely balanced diet is recommended. Insects tend to work for young crocodilians. They can be found at pet stores or acquired outside in pesticide-free areas.