Hi! New here, I've tried searching(bar and browsing) but can't find anything on air stones or wave makers or things to get oxygen back into water. I was told air stones, with lots of bubbles, but have watched youtube vids of wave makers? What do you use? Recommend? Kind of new to cichlids, given to us by my sister, they are orange mbuna. Really fun to watch. I'm still learning and trying to read/watch youtube to learn more! Thanks!