I'm in the final stretch of preparation for my first real tank! I'd just like to go over everything (and I mean everything) That I have done and will do. Please tell me if I should do anything.I have a 20 gallon tankI have plenty of artificial plants and rocks (for hiding places) and will use white sand (sand because I will have a few corys)A friend of mine will give me a filter that he used, so I don't have to cycle my tankI will use a heater to keep the temp correct for tropical fishI will use seachem prime before I put fish in, and in the water when I do a water changeI will do a water change once a week, removing 25% of the water Once again, please give me some feedback! That's about it. One last question I have is what fish should I start with. I want a tropical fish that's colorful, hardy, and can live with other fish that ill add later on. Also, what food should I buy? Thanks!