This is a Macintosh / MAC Apple Computers Fish Aquarium Do It Yourself Kit. If you have not seen these before they are the latest craze in Fish Aquariums ! The techies call this the Macquarium or Maquarium!
The kit includes a vintage Macintosh Classic computer case already gutted out and complete instructions on how to make a fish aquarium out of it. These aquariums sell for over $300 online already made, but you can save hundreds of dollars making it yourself.
The kit includes the computer case and the instructions ONLY. You will need to purchase other materials from your local hardware shop to complete the aquarium, but it will NOT cost any where near the $300 you would pay for one already made.