Couple of questions...
How are you testing the soil ph, and what specific soil are you using?
What's your tapwater ph, and do you adjust it before use? If so, with what?
Why sulfur? Those little pucks of sulfur can last quite a while, can burn the roots, and are quite toxic if overused. (speaking from personal experience)

Hopefully all will be fine, but perhaps next time...if need be...you'll ask here before making any drastic changes. A simple adjustment of water ph might have more to the plant's liking.

Rusty's General Rule of Thumb...nothing good happens overnight, but bad shit happens rather quickly. Keep an eye on 'em and make sure they aren't taking a dive on ya. Your answers to the above questions will determine the next steps you'll have to take, so try and reply asap.