24 cycles a day is a touch much. Depends on how well your medium drains as well. Keep in mind that you can run DWC which sits in the nutes all day long. Yet, I would rather use a 2-3 hour interval between waterings. You can also test it by using the old school method of waiting to see how long it takes for your plants to wilt slightly and adjust the cycle back to an hour or so before that. Yet, I don't like doing that. Once every 3-4 hours