In my salt water youth I really wanted an anemone. And since PetCo happened to have them for a whopping $7, I bought one. I asked the "dude" at the store if he was sure it didn't need any special lights, and he was like, "nawww dewwwwd They all good as long as you got yo tank near like a window or sumthin". So off I went to put him in my tank with my sixty something watt incandescent bulb above my 10 gallon tank.
it turned brown, and then died.
Must have been something I did. yup.
I personally don't use PetCo or any other "chains" that are located in my area for SW livestock or advice. I don't even support them for supplies unless I am hardcore desperate.