When I was younger I remember having a 15G tank but I never remember my mom doing water test or adding chemicals or even doing the starting cycle, none I that. So now I'm getting a 30G freshwater tank and was wondering if all of that is really necessary ( mainly the starting cycle that takes a month). My next question is if a heater is needed. My final question is what would be some great suggestions for fish for someone who is pretty much a newbie?