If watered properly, seed should germinate within 7-14 days. In general, 15 mins of watering, morning and evening should be sufficient. Though current temperatures will drastically affect this. As your new grass grows, you can water longer and less frequently, this will encourage roots to extend deeper into the soil.
We suggest applying a starter fertilizer at the time of planting. Starter fertilizer will be high in phosphorous and will keep nutrients readily available as the new grass is established. Do not apply weed control until the new grass has been mowed a minimum of three times.