Do you actually remove the bulb yourself or will it fall off on its own?
Well there's nobody there to remove anything in nature and they do just fine.
But I agree with timwag. I've never had great luck with those bulbs.
I'd suggest you get some actual plants if you want a planted tank. And since you mentioned that you shop at petsmart... Don't buy aquatic plants there. Most of them aren't aquatic plants.