Hows it going. My gf is interested in setup a fish tank for herself and wanted my help. Her dad had a saltwater reef aquarium set up about 10 years ago and she wanted to use his old tank. He left the reefs inside the tank with about an inch of water and now its all pretty much crystalized and I'm wondering if its going to be even possible to clean this bad boy out (or worth it). Its a 45 gal. Any suggestions, tips or products I should use? Thanks in advance