Clay, that’s what I was thinking when I saw his post. We "had" a LDS that hadn’t changed it’s filters and was pumping water into tanks and got expossed on Mo’s divers message board. It wasn’t long after that the shop closed.
Another problem is when the shop leaves the whip in the water bath and blows it out into your tank.
I think the LDS that certified me in Pa. did the same thing, one of my first 72’s rusted out within two years, they were the only shop that filled it and I never sucked that one dry.