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CO2 fertilizer tablets for the CO2 diffusion reactor
sera CO2 Tabs are simply placed into the according slot of the CO2 diffusion reactor. Upon contact with aquarium water, each tablet releases approx. 100 ml (representing 2,500 counting bubbles) of CO2 .
Order processing and verification typically takes 2-3 business days depending on demand levels and product shortages.
The expected time of arrival is 8-15 business days.
You will always receive an email once your order is processed as well as a tracking number.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
![Sera CO2 Tabs Plus 20 Tabs[Count - 20]](http://curiopet.com/cdn/shop/files/SR08040_SeraCO2TabsPlus20Tabs_Count-20.png?v=1781176943&width=1445)
