Not exact dimensions but pretty close. 1. 24x20x5 2. 5x7x5 3. I will just put some rubble rock and algae from the fish store in there. 4. i didnt build it if thats what this question means. If i did then maybe build a hood into it. Right now i just have an acrylic piece laying on the top with the correct dimensions so it wont evaporate. i will post some more pics tomorrow cause i changed it. Any more questions i will be sure to answer them for you. If you want a specific pic then i will do that too.