Saltwater aquarists are extremely devoted to this hobby. And you need to be too if you want to start a tank. This is no goldfish tank. Every day you need to pay attention to your tank. It is basically having an ecosystem in your home. Water parameters should be payed close attention to. This hobby is often called a rich man's hobby. Yes, this is an extremely expensive hobby. If you want to go cheap with your tank, it is less likely to be successful. I have put thousands of dollars into my tank to make sure it is great and in good condition. Just remember when starting this hobby, you have to be committed to it every day.