Healthy as compared to any clones. You know, white roots, healthy looking plants. Experiment was done in aero-cloner, and coco I believe but several growers tried it with different methods, they all worked. I don't have an account at the site anymore so I can't search old threads but if you have an account at icmag you can search for "cloning without lights" it should come up.
" In the book entitled "Secrets of the Soil", authors Peter Tompkins and Christopher Bird explain in detail how malnutrition begins with the soil, and how trace minerals are insufficiently available for adequate nourishment because the soil has become so depleted, due to the usage of synthetic chemical poisons and overworked soil conditions. Silver is one such trace mineral that has virtually disappeared from the soil, and deficiencies develop whenever we cannot obtain the quality and quantity of nutrients from the food we eat."