What are the best exercises to lose 30 lbs in 8 weeks with 2 herniated disks and 5 bulging disks through out your spine.

You have a complex: case and need to be under medical management during your weight loss to document your symptoms as you lose weight since you've had significant trauma to your spine, and possibly be in pain. Usually it's safer to lose 5 pounds/month up to 10 pounds, but 4 pounds a week may be difficult as your overexercising could put strain on your body.So discuss this with your doctor first to see the safest way.

Water: Well, you would definitely want to avoid aggravating your spine by doing "too much" exercise. Water exercises take much of the stress off the back and could potentially be better tolerated. Ultimately weight loss us based upon calorie intake verse calories burned, so limiting your intake of calories would certainly be helpful. You might consider getting the help of a trainer.