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CANNA COGR BUFFERING AGENT - 5L
CANNA COGR BUFFERING AGENT - 5L
CANNA COGR BUFFERING AGENT - 5L
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CANNA COGR BUFFERING AGENT - 5L

Marsoni M251S
Sale price$53.40
Pay 4 payments of $13.35 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
CANNA COGR BUFFERING AGENT - 5LCOGr Buffering Agent CANNA COGr Buffer Agent is a special liquid that is used to soak andbuffer COGr boards. CANNA developed this agent especially for the preparation of this growing medium. User Instructions: Shake bottle well before use Fill nutrient reservoir with water COGr Buffer Agent to the nutrient reservoir with the dilution ratio 1: 500 (200 ml per 100 litre of water) The EC of COGr Buffer Agent dissolved in (tap) water varies between 1. 5
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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4.5 ★★★★★
Based on 360 reviews
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Product Reviews
A
Verified Purchase
A
San Leandro, US
★★★★★ 5
A Sensitive Skin Must
Size: 1.7 Fl Oz (Pack of 1)
Very smooth and easy to rub in. No white cast. Great for sensitive skin. Daughter has eczema and I have rosacea, we both use this sunscreen without any issues.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 22, 2026
T
Verified Purchase
that Kelly girl
Chelsea, US
★★★★★ 5
Does well on my sensitive skin
Size: 1.7 Fl Oz (Pack of 1)
This is a good sunscreen, doesn't bother my sensitive skin or cause a roseacea flare up. It is a bit too dewy for my taste to wear just by itself, but does just fine when I use it under my makeup. If you like the "glass skin" look, it would be a good option.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
M
Verified Purchase
Mile High Shark
Dallas, US
★★★★★ 5
This really works!
Style: SPF 50, Size: 1 Count (Pack of 1)
A week on the beach and no burns! It is a little hard to get rubbed in and I probably had a little bit of a white cast on my skin. So worth it though for the protection of me and the reefs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 28, 2023
E
Verified Purchase
emily
Battle Creek, US
★★★★★ 5
Great product
Style: SPF 50, Size: 1 Count (Pack of 1)
Great product - does leave a white cast but worth it for the healthier option
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 22, 2025
B
Verified Purchase
Bobbie
Draper, US
★★★★★ 3
Very white and thick
Style: SPF 50, Size: 1 Count (Pack of 1)
Great for protection but leaves you very white. Hard to rub in
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

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