I know that theoretically clones will root in water, however, I have never been successful trying to root clones in water. I have some right now in water that are 3 weeks old and no roots at all. I am going to be patient and wait until either they die or root, no matter how long it takes, just to see what happens.
I did successfully root several clones that I cut and dipped the stem in cloning gel, then planted in rapid rooter cubes and placed in a dome. I had roots on 3 of these within 10 days, but you have to be careful, open the dome at least twice a day, spray with rooting hormone foliar spray, and keep the cube moist.
So my recommendation is if you don't want to wait a month to be disappointed, invest in a dome, some rooting gel and grow cubes.
You may also want to consider the hydro cloning systems on Amazon, for less than $100 you can get a machine that will clone up to 48 at a time. That might seem expensive until you consider the rooting gel is $25, the rapid rooter cubes are $20 for 50, and the dome itself is $20. With the machine, you don't need the gel or the cubes, they just root on their own.