I see frequently here on the board people recommending to others that they do large water changes to reduce ammonia during the cycling of tanks. In a fish in cycle that makes some since to prevent the ammonia from getting higher than the fish can tolerate. However in a fishless cycle it would seem that all that does is delay the cycle. Leaving the ammonia in the tank leads to the growth of more bacteria which is the goal. Why not just let the tank work through the cycle without water changes? When ammonia goes to 0 do a change just before the fish go in if your nitrates have gotten too high. Ammonia during cycle is a good thing why do water changes?