Anubius Nana Yellowing Leaves

[shane]

When Anubius Nana leaves begin to yellow (not from new growth), what deficiency does that typically point to?

 

[Frolicsome_Flora]

When Anubius Nana leaves begin to yellow (not from new growth), what deficiency does that typically point to?

Id probably think Iron or Nitrogen.. if the leaves still have green veins, then it could be magnesium.

 

[Brainman]

In my case K2SO4 solved that problem...