First time cloning and to forums

Hello guy this is my first time on everything including cloning. After looking at the difference type of cloning I decided to go with water. Build myself a small hydro. It's been a week now since I clone them. Starting to see little white dot coming out on each of them right where I cut it at 45 and above it. My question is how long does it usually take to see those nice long roots. I'm waiting to flower all my girls but also waiting for all the clones to take roots don't want them to die or not take roots. Thx!!!!