+1 - As mentioned, In a newly cycled tank there's only a reason for a partial water change if/when there is high nitrates. Also as mentioned, in a well planted tank, the plants may use most (if not all) of the ammonia as their nitrogen source, so very little nitrate results. My friend Byron always uses plants as a cycle buffer and never adds bottled ammonia...but only introduces fish gradually.
And that's your key...a modest partial water change and adding only a fish or two at a time, allowing the system the stabilize and balance. Too many times in newer setups, hobbyists think their tank is 'cycled', then add too many fish at once, creating an ammonia spike that the system can't compensate for quickly enough.