Look at the room as well as the machine
Record where the effect goes during an approved test. Is it moving towards a ventilation outlet, breaking up near an open door or changing when performers cross the area? Those observations help distinguish a room-condition problem from an equipment or consumable issue.
The effect may behave differently when the audience enters or doors remain open. Test under conditions as close as practicable to the intended cue and discuss any unavoidable differences with the technical team.
Check the specified equipment and consumables
Follow the machine manufacturer’s instructions and use the specified consumables. A product intended for a different effect can change the result. Do not improvise cooling additions, mix fluids or modify the machine to keep the fog low.
Different low-fog systems involve different handling and ventilation considerations. Where a method uses a cryogenic substance or gas, the relevant hazards and operating arrangements need competent assessment. A visual problem is not a reason to bypass those requirements.
Design a cue that works within the conditions
Explain whether you need a short entrance effect or a sustained low layer. Plan the cue timing around the tested result instead of assuming it will remain unchanged throughout a long scene. Consider the view from the audience and the performers’ route.
If the venue cannot support the intended look, adjust the creative plan. More output may simply create more residual atmosphere without solving the underlying airflow or warming issue. Agree a fallback that still supports the performance.
Put it into practice
What to record during a test
- How quickly the desired look forms and changes.
- Airflow, doors and movement that affect it.
- Whether the tested cue supports the performance safely and visibly.
Technical references
Manufacturer and official guidance behind the technical points in this article. Follow the instructions for the specific equipment and the arrangements agreed with your venue.
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