stik6shift98,
Your question is a bit vague since it doesn't mention specifically what sorts of plants you are trying to propogate.
Some plants propogate by sending out runners, some by new plantlets and others by flower which would require you to germinate the seeds. All you really need to do is keep up with all of the plants lighting/carbon/nutrient requirements and they will do the rest. I propogate many plants during the summer months when I can take advantage of the sun. I use a childrens swimming pool, a circulation pump and the sun. Since I am not too concerned with algae, I am a little loose with the nutrients.
HTH
PP