Hey there so like others said cloning into the cubes goes quick and easy the 7-10 approximately. My clone that I put straight in foxfarm soil took by far the longest and struggled the most. I think it was at least 2 weeks before I saw 1 root on side of the cup. You can also use natural honey or aloe vera in your water, they have natural rooting hormones and can really help out, just mix either or both into the water. (Aloe plant is best). And yes keep the leaves moist, but they also need air.
Best of luck