Hello, I just started my tank yesterday so any advice would be GREATLY APPRECIATED. I bought a 30 gal tank from a friend with the intent of doing a marine setup. I have been reading a few books and talking to the guy who takes care of the tanks at my work. He even gave me a coffee can full of "grunge" to help get it started.I got it from him yesterday I also mixed my water yesterday. This morning I put the grunge in the tank and it appears that there was a stowaway there was a very small star climbing up the glass I think it is a brittle star,when I find him again I will try to get a pic. My kids want to name it Patrick for some odd reason,lol. I tested the water today as well to get a baseline and there was no ammonia,nitrate or nitrite and the Ph was 8.2 and the salinity is 1.022 . Anyway that is what I have going at the moment.