I just purchased two 55 gallon tanks and one penguin 350 bio-wheel filter. I havent decided what I am going to do with the second tank. I have only one set up with just water in it thats been sitting for almost two days now and I plan on putting sand in within the next couple days. My questions are: I plan on getting the sand at a local lake, just wondering if that would work after I wash it off? Also the fish I plan on putting in it are a couple bluegill, green spotted sunfish, and a couple other small game fish like that, would these fish be good for starting out? Also the water I got sitting in the water, would it be ready in a couple days after I put the sand in to introduce a couple fish aslong as the ammonia levels are down? Do I need a light source for those type of game fish? Thats all I have for now but Iam sure I will have more questions in the future. Thanks Brett