Regular strains have little to no CBD. Auto plants will require lab testing of the finished buds of each plant. 1:1 is a ratio. That means if the buds test at 8% THC, then it will have the same amount (8%) of CBD. Without testing, you don't know what percentage you're dealing with. There are also autos that claim 2:1 and 3:1 ratios. But again with out testing, you won't know the percentages. Let's say an auto says it has a 3:1 ratio... If the buds test at 3% THC then it should test at 9% CBD.. But what if it only tests at 1% THC? You're only getting 3% CBD. The higher the CBD percentage, the higher the medicinal benefits. There are photo period clones that have ratios of 18:1, like the AC/DC strain..Those you only have to test once, take clones and you're good to go. But it's impossible to answer your question with autos. I'd say use the highest ratio you can find to improve the odds of it providing relief.