Stop Guessing. Start Tracking.
The Master Cold Plunge Performance Log.
The exact Google Sheet template used by pros to track water chemistry, temperature drops, and chiller performance. No sign-up required.
Get the Google Sheet (Free)*Clicking will prompt you to "Make a Copy" to your own Google Drive.
Why Use a Spreadsheet?
Apps are great, but data is power. This free log automatically tracks your weekly cold exposure minutes and helps you spot water quality trends *before* your water turns cloudy or your chiller fails.
Hard Data: Real-World Chiller Performance Benchmarks
We aggregated user data from Reddit and forums to measure cooling power vs. component quality.
(Based on ~75-80 Gallon volume at 68°F Ambient)
| Brand / Model | HP Rating | Pump Quality / Flow | Cooling Speed (Est.) | Time to 39°F (From 65°F) |
|---|---|---|---|---|
| ModTub | 1/4 HP | Low Flow, Indoor Use Pump | 3 - 5°F / hr | ~6-8 Hours |
| Ice Barrel 300 + Chiller | 1/2 HP | Lower Flow, Prone to Clog | ~6°F / hr | ~5-7 Hours |
| Polar Monkey (Standard) | 1 HP (High Eff.) | Standard Circulation Pump | 11 - 12°F / hr | ~3-4 Hours |
| StillPlunge Pro | 1 HP (True Industrial) | High-Performance Pump (3000 L/hr) | ~14.4°F / hr | ~1.5 - 2 Hours |
| ColdTrue (Legacy 1HP) | 1 HP (First Gen) | Weak/Entry-Level Pump (Failure Prone) | 9 - 10°F / hr | ~3-4 Hours |
| Generic Aquarium Chiller | 1/3 HP | Basic Submersible Pump | 2 - 3°F / hr | 10+ Hours |
The Hidden Failure Point: The Pump
Many 1HP chillers, even competitor models with decent compressors, cut costs by using a weak, underpowered circulation pump. This slow flow leads to inefficient cooling, long recovery times, and—most commonly—pump burnout and total chiller failure.
StillPlunge: We pair our powerful 1HP compressor with a high-flow, heavy-duty 3000+ L/hr pump. This synergy ensures water moves fast enough for maximum heat transfer, resulting in our industry-leading ~14.4°F/hr drop and superior longevity.
