Rusty Clamp

[Phanntom]

Hi all.

I have a 25 gallon plastic pail that I use for pre-mixing my water used for water changes. I have a circ pump hooked to a hose I use for mixing/removing water from the pail. I used a stainless steel clamp (or so I thought) to hold the hose to the pump. Below is a picture of the clamp (I have since replaced it with a plastic one) I used. My question is this, should I be worried about the rust/minerals in my reef tank?? My water change this morning is when i noticed the clamp and my anemone has since (shriveled up) for lack of a better discription..

Thanks, Bill...