I'm looking for 10 or 20 gallon tanks for my science fair project. I also need to get live sand for them. I currently have 3 10 gallon tanks and 40 pounds of live sand in them. I would like to try and get one pound of live sand per gallon of water. Also any type of lighting would help if anyone has any lighting fixtures. if you have anything else you'd be willing to trade or give away let me know. Thanks