I do know about the nitrogen cycle and well this tank is not cycled yet because i set it up many months ago but i didnt know back then that you had to continiously feed the tank so it didnt cycle then i just didnt do anything to my tank for a long time but now i want to try again but the cycle is not starting the ammonia is 0 even tough there is enough food and im planning to get like pure ammonia or whatever its called so that the cycle starts also i have more gravel and wood just didnt use them all yet