I don't see why you can't use it, I just wouldn't use it for the first few waterings right after you've transplanted. It's fine to use it once they have recovered from the transplanting. I know what the chemical symbols mean, I was looking for the actual ingredients that supply those chemical elements. Like for P and K it might contain potassium phosphate for example. That would give an indication of the fertilizer salt index. Not to worry, it probably wasn't strong enough to be very salty anyway.
Without knowing what the miraculous RAM stuff is it's hard to say whether it's useful or just advertising.
