Welcome to Open Source Cold Plunge.

This is a community that promotes free information sharing and exploration related to cold plunges.

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- Announcements
- admin started Apr 18, 2023
- It's been reported that the sign up verification email is sometimes going to spam in gmail. The email comes from opensourcecoldplunge@gmail.com If there is a problem with sign...
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Pump noise/issue
- PumpsCompleted Build
- surfdog08 replied Jul 30, 2024
- 240
1 reply
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Looking for a water chiller in Germany
- Chiller SetupQuestionParts List
- Medicroger replied Jul 26, 2024
- 1.0K
23 replies
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Visual Learner Optimized: Grizzly 400/450 + Active Aqua 1/4HP
- Chiller SetupEducationCompleted BuildBuild Log
- Andy replied Jul 15, 2024
- 648
3 replies
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Build Log: Grizzly 400 "Modplunge", AA 1/4 Chiller setup.
- Chiller SetupCompleted BuildBuild Log
- wintermute replied Jul 3, 2024
- 8.1K
77 replies
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Grizzly Torrent Twist - Internal Diameter
- Chiller SetupQuestion
- wintermute replied Jun 28, 2024
- 301
1 reply
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Grizzly 450 photos
- Chiller SetupEducation
- wintermute replied Jun 28, 2024
- 347
1 reply
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Ozone Injection
- SanitizationQuestion
- wintermute replied Jun 28, 2024
- 330
1 reply
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Solstice rigid inflatable tub + Active Aqua 1/4hp
- General DiscussionCompleted Build
- wintermute replied Apr 19, 2024
- 282
1 reply
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Looking for a chiller for 100 gal
- Chiller SetupQuestionHow To
- wintermute replied Apr 2, 2024
- 330
1 reply
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Hydrogen Peroxide calculator spreadsheet
- SanitizationEducation
- wintermute replied Apr 2, 2024
- 1.1K
8 replies
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Grizzly 400 Build with AA 1/4HP Chiller
- Chiller SetupCompleted Build
- Pickleballguy replied Mar 19, 2024
- 782
7 replies
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Sanitation with Hydrogen Peroxide: Notes and Lessons
- SanitizationEducation
- wintermute replied Mar 5, 2024
- 1.4K
8 replies
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Grizzly 400 Cold Plunge Build
- General DiscussionEducationCompleted BuildBuild Log
- coman1080 replied Mar 5, 2024
- 8.4K
12 replies
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Grizzly 400 & ActiveAqua 1/4hp Chiller
- Chiller SetupCompleted BuildBuild Log
- SuperSushi replied Feb 27, 2024
- 3.9K
32 replies
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Why you shouldn't use exclusively teflon tape for PVC threads.
- FiltrationEducation
- wintermute replied Feb 20, 2024
- 773
6 replies
ATTN: Low quality posts are deleted.
- Announcements
- admin started Feb 13, 2024
0 replies
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internal vs external pump/filter
- PumpsFiltrationQuestion
- Kelly_CO replied Feb 12, 2024
- 407
2 replies
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UV Light Sanitation questions.
- SanitizationQuestion
- wintermute replied Feb 10, 2024
- 821
6 replies
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Best ways to change the water in a Grizzly Cooler
- General DiscussionQuestion
- wintermute replied Nov 21, 2023
- 340
1 reply

FYI Check your spam folder for sign up email!

Pump noise/issue

Looking for a water chiller in Germany

Visual Learner Optimized: Grizzly 400/450 + Active Aqua 1/4HP

Build Log: Grizzly 400 "Modplunge", AA 1/4 Chiller setup.

Grizzly Torrent Twist - Internal Diameter

Grizzly 450 photos

Ozone Injection

Solstice rigid inflatable tub + Active Aqua 1/4hp

Looking for a chiller for 100 gal

Hydrogen Peroxide calculator spreadsheet

Grizzly 400 Build with AA 1/4HP Chiller

Sanitation with Hydrogen Peroxide: Notes and Lessons

Grizzly 400 Cold Plunge Build

Grizzly 400 & ActiveAqua 1/4hp Chiller

Why you shouldn't use exclusively teflon tape for PVC threads.

ATTN: Low quality posts are deleted.

internal vs external pump/filter

UV Light Sanitation questions.

Best ways to change the water in a Grizzly Cooler