Homebrew PCBs

Kim Vellore wrote:
 >
 > I have this tank with the glass heater which I found broke one day, I was
 > wondering what would have happened if I had turned it on with 120V, 
is the
 > acid conductive enough that it blows up, is it a safety concern? I 
have been
 > looking for the shatter proof heaters which can go that high a 
temperature
 > and cheap...
 >
 > My 2C on building your own avoid gluing and build the tank it is not 
worth
 > the trouble, imagine the damage if it leaks, try to use a solid 
container. I
 > use a bigger secondary container too I had a spill once a small one 
when I
 > tripped over the tank it was a terrible mess, and it never gets 100% 
clean.
 >
 > Kim

I am thinking no-glue with tupperware or something similar. Don't know 
that I ever had a fish tank heater break before. Is this common?
Thanks,
Dave