I have completed my cycling in my 29 gallon and have high nitrates so I will be doing a large water change. I do not have my first fish yet to put in. My question is do I need to add anything to the tank to maintain my bacteria until I put my fish in? I completed my cycle using ammonia dosing. I have read conflicting information about needing to feed the bacteria once the cycle has been initially completed. Can anyone help with the answer to this?