Re: D-D CO2 replacement cylinders
#2
Have you tried one of these?
I am being serious, I have seen them being used for fish tank plants, you do need a regulator
eg
@2kg of CO2 it will last a lot longer than what you have or are thinking of getting.
Good quality costs. Bear this in mind before you start.
Sorry if my reply is NOT want you want to hear, but what I have said is true.
We can only go by what you type.
A "thank you" costs nothing, but goes a long way.