So also as I'm doing research I'm getting slightly overwhelmed I guess, so many articles I read about switching to sand say you must wash the sand, especially if it's play sand, is this true? and if it is true what's the best way to clean it? And also I realized if my tank is settled with it's bacteria and everything etc all that good stuff, don't I have to bring some gravel into the new tank just to bring the bacteria into that tank or will I be fine if I just stop messing with the gravel and just fill the new tank with sand and then dd my existing filter?