I decided to turn my 4 gallon Aqueon Evolve into a saltwater tank. I'm going to slowly set it up for invertebrates and soft corals and zoas. I grabbed a pound of live rock at the LFS and will get some more next time I go, as well as some aragonite sand. I also saw an awesome feather duster at the LFS, so I have it in my dad's established saltwater tank until mine is up and running and cycled and established. I'm excited to try my hand at saltwater. It'll be fun to play with while I wait for the guppy fry in my 20 gallon to grow big enough to give to my LFS so I can start aquascaping that tank. Pictures below!