I have read so much about which fertilizer is the "right" one and it makes it difficult to know how to select the right one.
Many fantastic articles have been written by people that make Adenium growing a life time study. For myself, not being a chemist or scientist have to believe that what they write is from proven trials. This is not to say that I do not have questions or thoughts on the subject.
It has also been shown that much of what we use for fertilizers depends on whether our plants are grown in containers (most seem to be) or whether in th ground. Another note is the soil in which we are using. If using a soil of more organic means, using chemical fertilizers will disrupt or damage any beneficial nutrients and organisms.
I think it best that I finish here.
I use Dyna Gro Plant Pro 9-3-6 & Dyna Grow Plant Protekt 0-0-3 in combination. Sometimes give a watering with Kelp Fertilizer.
Rick