I have setup a 120cmX80cmX160cm Tent with a closed loop air cooled reflector (no need to filter as air passes through light/ducting and straight back out) I have a separate Fan/Filter to vent the room in order to control Temp/Humidity.

I have a UNIS CO2 System which I used to use within a larger room placed behind a Large Pedestal fan which moved the Co2 enriched air to where it was needed.

This time however I decided to leave the CO2 Bottle Outside and was given some "LayFlat" from the Local Store however they never raelly explained how to secure to the Outlet on the Unis system (I have tried securing with a rubber band) but that's not effective and only the first few feet of the layflat seems to expand when CO2 is added.

I also tried pumping up the CO2 level but still does not seem to even get the gas within the tent.

Any Suggestions??

The Unis System has an Outlet which looks like some sort of rubber tubing would fit better (google unis co2 controller to view)

Thanks