Standard 90g tank with pretty basic lighting, and Eheim 2217 filter.
Read lots and learn as much about the hobby as you can. Investing the time before hand can save you hassles later on.
Large variety of plants.
We will not solve the problems of the world from the same level of thinking that created them. -Albert Einstein
The pet trade gets a bad rap for exploiting wild animals but sometimes the opposite is true.
Modern advances in technology affect every industry - even the aquarium hobby.
If you are looking for a unique invertebrate to add to your saltwater tank, consider the sea urchin.