I'm on my first coco grow and I feed and every two days. As a coco newbie, I'm still learning but most of what I've read recommends daily or every other day feeding. It really is hydro with a soil look and feel. I've also read everywhere that you cannot let coco dry like soil. I think soil is probably the safest to leave for several days at a time but it really is best to have some sort of timed watering, like alltatup said.