Shockers are low pressure markers. As long as you have the front reg running around 200 psi, not too much above as you could run the risk of blowing the noid, you can run on a high pressure tank.
Some people say high pressure tanks and some say low pressure tanks, it all comes down to recharge rate of the front reg as I understand it. I run a high pressure max flow(550psi) and have had no problems.