So no nutes so i assume it could be a deficiency.
Magnesium deficiency will exhibit a yellowing (which may turn brown) and interveinal chlorosis beginning in the older leaves. The older leaves will be the first to develop interveinal chlorosis. Starting at leaf margin or tip and progressing inward between the veins.
Now don't take this as being right wait until someone with more experience chimes in, it just a guess.:hippy::stoned:
Greenthing Reviewed by Greenthing on . Leaves Spotted S= Soil Genetics= White Rhino CMS= Mircal Grow African Violet Light cycle = 18/6 Age= 2 weeks 2 days Grow Type= CFL BOX GROW Vent= 3 fans for intake, Outtake, and Air Movement nutrients= None Applyed yet so here are some pics of my issue. i tried the plant problems guide but could figure it out. so here are some pics and hopefully i gave enough info. Rating: 5