sulphur

I have tried growing plants a few times but every time they end up short with very little bud. Could my well water be to blame? We have a high concentration of sulphur in our water.

I see many people use Blackstone molasses. Where do you get that and how much is it? King syrup has NO sulphur or shul per dioxide in the which is good. But it has corn syrup in it, is that okay?