Does anyone have a link to one I could use? Is there one even out there?
They're used regularly in botany for species identification.
If someone with a lot of growing experience like Chris would like to create one for canabis issues I reckon it would be very popular.
If you don't know what they are it's a triage flowchart that asks questions to get to the answer, for example:
Have you just watered? yes/no
Are the leaves yellow between the veins yes/no
Is the plant in flower? yes/no