I couldn't say. Usually the guys at the shops are happy to sell you crap you don't need, but usually they want you to be successful, so you keep coming back. So, maybe those are fine together, I really don't know.
I'd look them up online, and see if you can find a schedule, or find someone else using those nutrients. If nothing else, call/visit the shop and ask for advice/clarification.
And no, I'm afraid I have to say that you are the cause of your plants ills, even if the guy gave you bad info. Not knocking you, but you have to own your grow. It's your grow, not his.