Aero cloning is by far the easiest way to clone. Ive cut the plant any so many ways, odd angles, stranges places, and every cutting has rooted 100%. I mean 100%. I use water right from the tap with nothing at all added( I mean nothing, zero ziltch nada),and a 396 pump, pvc pipe and an 18 gallon rubbermaid container. I followed the stink bud method and plans for building the cloner. Google Stinkbud to learn more. The set up costs virtually nothing to build.
The timer is pricy as G,ro said at $80-100 bucks for the Cap timer that lets you adjust the time. Cap also offers a different timer that is pre-set at 1 minute on and 4 minutes off. This timer costs a little less then the adjustable timer. The same timer and design principles are used to make both the veg and flower units.
Aero cloning is all about 1minute on 4 or 5 minutes off period to me. High temps in the water lead to many problems. G,ro is correct with the information in his post.