You are reading a single comment by @ewanmac and its replies.
Click here to read the full conversation.
-
Just asked and apparently it's only measuring CO2, so hopefully that is less of a problem.
As an aside the baseline concentration of CO2 in our garden is around 417ppm!
@Pifko that would be ace, just as an experiment - will pm.
I would be concerned with off-gassing from the plastic pipe let alone an inner tube - think how much they smell. Food grade materials might be worth looking at instead.