I do not know about that suplement so can not comment on it. It appears to have similar nutrients as molasses.
I would just use water and molasses if it was me but check and see if anyone else uses that supplement. But molasses has calcium, magnesium, iron, etc etc so it is the only thing you would need. And i use it the last 2 weeks. I use 1 tablespoon molasses per gallon, then ph the water and thats it. The leaves will start to yellow but that is ok because it is using up all the leftover nutrients that can cause off flavors. There is another thread currently about molasses somewhere right now too. Some use 2 tablespoons molasses per gallon during the last 2 weeks.
Since you have the supplement sugerdaddy ask around and see who uses it and how they use it. Im guessing though it replaces molasses but im not sure.