How Many Blu Technology Bleach-Free Liquid Sanitizer Packs Are Needed For A 100-Gallon Tank?
Updated 04/20/2026 | Published 04/13/2026
Question:
We are looking to sanitize both the lines and the fresh water tank. We have a 100 Gallon Fresh Water tank. Does this product specify how many packs to use per size of tank? ie: 1 packet per 20gal.
asked by: Rebecca
Expert Reply:
Hey Rebecca, thanks for reaching out. Your guess was actually spot on!
The Blu Technology Bleach-Free Liquid Sanitizer for RV Plumbing and Holding Tanks # GB77FR comes with two 0.5 oz packs and that is enough for approximately 40 gallons. So for your 100-gallon tank you'll need 5 packs to effectively sanitize the whole thing.
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Product Page this Question was Asked From
Blu Technology Bleach-Free Liquid Sanitizer for RV Plumbing and Holding Tanks
- RV Black Tank Cleaner
- Fresh Water Tanks
- Cleaners and Treatments
- Liquid Treatments
- Chemical/Detergent
- 2 Uses
- goblutech
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Steve
4/18/2026
From Blu Technology Web Site: Using BLU BLEACHFREE Fresh water holding tanks can vary in size. The amount of BLU BLEACHFREE needed to fully sanitize them will vary. Each pack contains two 0.5 fl. oz. packets of the sanitizer. Each individual 0.5 fl. oz. packet can sanitize up to 20 gallons of water. One pack of two will sanitize up to 40 gallons of water. Sanitize up to 40 gallons of water NSF-certified safe, no health hazard EPA-approved when used as directed Protects your RV plumbing from bleach corrosion, build-up and degradation Use on average every 3-4 months