I just updated my profile info so its correct. My cousin gave me a 40 gallon hexagon aquarium that I'd like to transfer the 20 gallon stuff into it. Few questions though, first I just got it into my house and it has a smoke smell, he used to have it in his garage and I'm sure a lot of smoking went on in there, will that negatively effect fish or anything I have in it? Second, It has a lot of water spots and runs on it, its not hard water that can easily be scrapped off with a razor because I did that, I put vinegar on it for an hour and scrubbed and rinsed and its still there, I can't think of anything else that would do the trick, is it possible its just stained on there and can't get it off? Thirdly what can I put in it? I'd like to put slightly more advanced fish in it, like chiclids maybe, rams or angels? I'm holding onto the pleco for sure and I like the tetras but can get rid of them, the betta as well. I think what I'll end up doing tho is just holding onto the stock for a while and not messing with any new fish. I used to do mollies/guppies/danios, then I went to betta with neon tetras, I'm just ready for something new and different. Hopefully I covered the details. I haven't taken any pictures of the water spots I didnt think I needed to but if you want to see them i can upload some.