Figure 5.

Section of CO ₂ reactor to maximize gas mixing into the water (A). New water enters the reactor through a lateral intake forced by a water pump (a); water flows upward passing by Bioballs^® to maximize surface area (b); water is collected in a pipe (c) with a CO ₂ intake (d); water with CO ₂ is “crushed” in a water pump (e), which reduces bubble size and forces the water back into the chamber; larger bubbles move upward re‐entering the “crushing” process, water without large bubbles moves downward, leaving the reactor though small holes at the chamber bottom (f). Secondary system aquarium (B). Built‐in sump (a); sample chamber (b); water overflow (c); and cover lid (d).