Fishless Cycle Help

Your water seems to be quite soft. There isn't much buffer to begin with. The PH drops when nitrate is at 40ppm. In the future after the tank is cycled you might want to do 50% water change every week if you have a full stock of fish in order to avoid PH fluctuation. Fish will need to have stable PH.

Do you plan to stick with 4ppm ammonia and end the fishless cycle with 4ppm ammonia converted daily? Or do you plan to increase the dosage eventually to have your tank be able to handle heavier load?