Sera CO2 Tablets

20 Tablets
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 .

Aquariums up to 45 Liters; one 2 -Tab every third to fourth day.
Aquariums up to 90 Liters; one 2 -Tab every second to third day.
Aquariums between 120-170 Liters; one 2 -Tab every second day.