"But, imagine what this does for inflammation. That is 7 pounds of fluid you are no longer carrying and pumping against. It's basically a gallon. The first round of keto I did, I lost a ton of weight the first month (~20 lbs), and my blood pressure plummeted to the point where I was dizzy all the time, and I had to supplement with salt and magnesium."

Are you saying losing the waterweight decreased your blood pressure?

AFAIK the water lost was bound to the carbohydrates being stored. It's not in liquid form.