havent done sw
tank but its about the same. most people want black or blue. is this a glass tank? thats the only ones i have done. i went down to walmart got a couple cans of black spray paint. i tap the rim off then use newspaper and tape off the sides and top. basically i cover all sides not being painted.
once thats done i use windex to clean the glass. after that i use rubbing alcohol again to clean it. once dried its ready to paint. the key is even coats that are thin. the first several coats is the key. go lightly and dont stand so close it will run. i do mine out side normally took me about 7 coats. i would put a new coat on every 15 mins or so.
i also tried the reg paint that rolls on its a lot harder and takes a lot longer.