Hi everybody, Hopes everyone has a great day. I'm still confused on fish less cycling. I was thinking of buying Dr.tim All in one nitrifying bacteria and ammonia. Questions: Do I change the water 100% after the cycle is successful? But doesn't that get rid of all the bacteria created in the first place? and what is the range you want your tank to be at for nitrate (0-20ppm)? Someone could explain fishless cycling, that would be very much helpful. Thank you in advance.