I recently bought a used 34g all in one a few days ago. It was a mess when I first got it but I cleaned it up and added some sand and water to it. It's still a little cloudy. My dry rock should come in today, as well as some ammonia and some Bio-Spira so I can begin cycling it today. Also, if anyone knows how to work this timer, that would be greatly I can't seem to figure it out.