co2 help

how do you plan on using a jam jar??:huh:
 
Although I have read from Co2 Horror stories, that glass can shatter from the pressure that bulids up with DIy Co2 systems.

I am happy to use coke bottles for Co2, and even then I put them in a spare tank... just incase they explode.
 
hi all i never put the question properly..i mean can i use the empty jar turned upside down in the aquarium with airstone under jar to capture the co2 bubbles?
 
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