Diagnosis: Yellow spots with dark specks?

[sjamesNorway]

Originally Posted by zipcode

It will help some, best is some foliar, this way you bypass the roots. Look online for how much MgSO4 concentration to use for foliar.
The affected leaves will not recover, but should slow down the rate with which it appears on other leaves.
I have it every year in containers, it's kind of unavoidable it seems, I just gradually cut older leaves which are too affected.

Hi again zipcode, and many thanks for this information - very good to know! I'll check out the concentration, and use foliar.

Steve

[HydroExplorer]

Originally Posted by zipcode

It will help some, best is some foliar, this way you bypass the roots. Look online for how much MgSO4 concentration to use for foliar.
The affected leaves will not recover, but should slow down the rate with which it appears on other leaves.
I have it every year in containers, it's kind of unavoidable it seems, I just gradually cut older leaves which are too affected.

This sounds right to me. New growth will look normal again if you fix the problem.