Krishs Bettas
Member
- Joined
- 10 May 2009
- Messages
- 422
I was wondering if it was worth to run a air pump at night because I run my co2 all day and night to help the fish?
Definitely run the air pump, all the bio-load, that is all the living aerobic organisms in both tank and filter *(fish, snails, plants, bacteria) are respiring all the time (using O2, producing CO2). During the light period, it is only when photosynthesis reaches the "compensation point", that the oxygen production from photosynthesis (CO2 in, O2 out) exceeds the plants demand for oxygen (for respiration) and the plants become net oxygen producers.I bought a valve for co2, so it can be switched off at night, yet I do have a high stock level of fish, so would be interested to know if even though the co2 is off, can the fish consume the o2?