Co2 And Agitation?

[Rlon35]

Hey guys. OK...I have a fermentation CO2 kit, and I removed my tank-long flexible bubble wand. So, I have a Fluval 305 and a Fluval internal filter in there. There are many plants, but I am worried that the fish need more oxygen. what are my best options so as not to interfere with the CO2 process?

thanks

 

[Colin_T]

There isn't one. If you aerate the water to increase the oxygen (O2), you will drive out the carbon dioxide (CO2).
When the plants are getting light they will be using the CO2 and releasing O2 into the water. Most problems occur at night when the lights are off and the CO2 is on. Then the oxygen levels can drop and the CO2 builds up and the fish suffocate. Many people have an air pump on a timer and it comes on when the lights go out and turns off when the lights come on. This maximises the O2 at night and allows the CO2 to remain in the water during the day when the plants need it.

 

[Rlon35]

There isn't one. If you aerate the water to increase the oxygen (O2), you will drive out the carbon dioxide (CO2).
When the plants are getting light they will be using the CO2 and releasing O2 into the water. Most problems occur at night when the lights are off and the CO2 is on. Then the oxygen levels can drop and the CO2 builds up and the fish suffocate. Many people have an air pump on a timer and it comes on when the lights go out and turns off when the lights come on. This maximises the O2 at night and allows the CO2 to remain in the water during the day when the plants need it.

^^^^^^

Thanks for the info.

 

[Wolfenrook]

I wouldn't worry too much about oxygen during the day Rlon, the plants will produce copious quantities of it given good lighting and CO2 diffusion. Just keep an eye that your CO2 levels don't get too high (a drop checker/permanent CO2 test does this job nicely) as this is a larger risk than low O2 levels.

Ade

 

[SJ2K]

Im having the same problem myself figuring this out, i really dont want an air pump because there noisy as hell and I dont want the tubing in my tank. If only I had the money for an eheim pro3e.

 

[Colin_T]

You can use a water pump to come on at night instead of an air pump. Just have the outlet aimed towards the surface. It will create surface turbulence and help drive out the excess CO2.