Arnoldichthys spilopterus (African Red Eye Tetra)

[morefirejules08]

Hi
Does anyone keep African Red Eye Tetra? My local shop has got some in but what i would like to know is will they tolerate a high CO2 environment?

cheers

 

[frothhelmet]

How high CO2? Dont go over 30ppm and you should be fine with most fish. If you want to be sure, start off with low CO2 and gradually increase until you see them hovering near the surface (this is dangerous though so you must be there to monitor/ do an immediate water change b/c you can kill your fish easily this way).