Aquarium Thermometer Fixing

[omega59]

Hi all. I have a question about these. I accidently while turning the thermometer's plastic suction broke the top round tip off. What can i use to repare this back so that water doesn't get inside of this.

Mines sort of looks like this image below, just to give you an idea.

 

[WILDER]

Is it jsut the suction cup that broken or the thermomter as well.
I would throw it away if the thermomter broke.

 

[omega59]

it is the thermometer that broke, but it is the very top tip, it's not actually broken inside anything, just the tip of the glass at teh top.

 

[WILDER]

I would throw it away don't want them mercury balls in the tank..

 

[Nina]

Just buy some aquarium silicon from your LFS and stick that on the end. That will make it water tight once more

 

[omega59]

okay nina thank you

 

[WILDER]

If you do decide to use the silcone you have to let it dry out for 24 hours before you add it to the tank.
I wouldn't risk it to be honest as if the fish knock it in the tank it could shatter.
Just use if for water changes.