Hi all :kana: well,got my new tank about 4 weeks ago (3ftx15"x12") 25 gallons i believe?got a biolife filter/heater,a water testing kit(to test all 4 levels)left tank to "run/cycle" for a couple of weeks,checking levels regulary,then added a few fish.(10 neons,6 head/tail light tetras,and 2...