Halloween fog low-lying mix
Heuristic ice and water chest sizing for DIY low-lying fog chillers.
ice_lb ≈ chest_qt × ice_lb_per_qt · water_gal ≈ ice_lb × melt_gal_per_lb · runtime_hint_hr ≈ ice_lb ÷ melt_lb_per_hr
When to use
This tool helps when you want a halloween fog low-lying mix planning figure with the assumptions written down. You will enter cooler / chest size (quarts), ice density heuristic, and expected melt rate.
Low-lying fog needs chilled fog from a sealed cooler with ducting. This planner estimates ice load and rough melt water — not a chemistry recipe for fog juice.
Stop and ask a licensed electrician when loads, hardwired outlets, or roof work go beyond temporary plug-in holiday displays.
Common party coolers 20–50 qt; larger hazers use bigger chests.
Heuristic pack density; ~0.5–0.7 lb/qt when not brick-solid.
Warm garages melt faster; start ~8–12 lb/hr as a planning guess.
Physics ≈ 0.12 gal/lb; keep drainage planned.
Worked example
Example inputs from the form defaults — Cooler / chest size (quarts) = 48; Ice load (lb per quart capacity) = 0.6; Ice melt rate (lb per hour) = 10; Melt water (gal per lb ice) = 0.12 — are plausible homeowner figures, not a survey of your house.
Compute with: ice_lb ≈ chest_qt × ice_lb_per_qt · water_gal ≈ ice_lb × melt_gal_per_lb · runtime_hint_hr ≈ ice_lb ÷ melt_lb_per_hr. Show intermediates before the final count or length.
When the calculator and scratch math disagree, fix units first; the halloween fog low-lying mix model is only as good as consistent inputs.
Limits / assumptions
Units: keep every length in one system (feet or inches end-to-end) and every electrical quantity in the units the labels name. Mixing without converting invents a wrong answer.
Where the formula fails: odd geometry, wind on inflatables, worn sockets, and conditions not listed on the page are outside the model. Zero or nonsense inputs should error — do not force a number.
Not a substitute: the halloween fog low-lying mix result is a planning aid for holiday decorating — not an install quote, structural opinion, or product warranty.
Heuristic only — ambient temperature, ice shape, and airflow change melt dramatically. Not a substitute for fog-machine fluid runtime.
Keep water drained so it cannot flood the fog path or outlets. Use outdoor-rated power, never enclose the fog machine in sealed plastic, and keep fog away from roads and HVAC intakes.
FAQ
Is this fog juice mix?
No — juice ratios are on the fluid bottle. This sizes the ice chest that chills ordinary fog into a ground-hugger.
Dry ice instead?
Different workflow and safety rules (ventilation, gloves). Do not treat dry-ice pounds as bagged-ice pounds.
How long will a show last?
runtime_hint ≈ ice_lb ÷ melt_lb_per_hr. Refill ice between waves on warm nights.
Pair with fog runtime?
Yes — use Fog machine runtime for fluid minutes, then this tool for ice capacity.