how to treat tank for broken thermometer

[mccanei]

I woke up this morning to find a my thermometer smashed and at the bottom of my tank. THe thermometer was a traditional type with read stuff and little silver balls in the bottom. As the temperature rose the red level went up. I am leaving for work this morning and threw a bag of charcoal in the tank to remove any toxins. Fish still seem normal
has this happened to anyone? How have you treated this? Is this highly toxic to fish?

 

[v-lioness]

I had a lion bite one of these and broke it, I just syphoned the bottom and did a water change, try to syphon out as much as possible. I was testing my digital at the time plus, it was a reef tank, this had no ill effects on the fish or coral.
Kaye

 

[xdave]

Definately try to get all the little balls out, they're usually lead.

 

[tx reef]

You can use a magnet to get the balls out.