Roots will grow without a root stimulant...it's just much more difficult. Ever remember seeing a pothos hanging vine growing in a vase? You can almost bet that wasn't done with a root stimulant. Look at the ingredients of root hormone...it's acid based. You shouldn't introduce more than a quick 5-10 second dunk in root stimulant ever in the plants life. The plant has all the nutirients it needs to make roots, the acid just stimulates the growth. Rooting can take up to 2 weeks depending on the conditions. Also, oasis has to be in original form, you can't just tear into it to find the roots. The clone needs the structure of the oasis to support itself and find nutrients. Let the plant do it's thing, just give it the environmental factors it needs.