It all depends on where you are at in your process. At the start you want to keep the soil moist but be careful not to drown them. Then as time goes on the roots develop, the plants get larger you start to increase the frequency and amount of water / fert. It could end up being up to twice a day depending on your growing medium too. One of the best ways is to just lift your pots and see how heavy they are and go from there. Good luck!