, well, a decline in the rate of CO2
has repeatedly induce this.
No, it's not normal growth, I no longer have any issues as long as the CO2
is up. I wanted to know why myself, the plant grows extremely well and never gets blackened with good CO2
, even under a MH
If you have less light, it can still do pretty good without higher CO2
, but you still need good stable CO2
DIY on a 75 gallon tank is a smoking gun.
If you can repeatedly induce the blackening and then get rid of it with just one parameter, then it's pretty likely we can say that is (at least one) a cause.