Everything the above posters have said about keeping it simple are true, plain old tap water, no nutes and soft lighting is important but NOBODY has mentioned the single most important factor in taking clones successfully from a cutting to a rooted plant is the stock material you choose, tops do not root the quickest, the bottom "left behind" branches do not either, it's the meat in the middle that roots quickest and turns out to be the fastest and healthiest clones. Cut above a node giving yourself no more than 4 inches of stem, scrape the blade down both sides of the stem exposing the cambium to the water, I've had roots in 3-7 days and have never had a loss, some get recycled for new mother material and the weakest get tossed. Cutting below a node will take longer to root as the area at the end is geared to produce a leaf, not a root, hormones need to change, structure needs to change, this takes time and puts unnecessary stress on the clone. I have consistently seen roots burst from a open stem quickest.
Without bragging to date I have taken thousands of clones and grown start to finish in aero for some time, picking the right material is most of the effort, the other factors are merely there to support the stock do what it needs to do.
