Can't get these brown spots to stop... maybe its not a nute issue?

[killfrenzi]

Interveinal Chlorosis. - I jus checked the FAQ's section and It looks as if its 1 of 2 things. Ill start with Ozone, it also says Magnesium., but if you are not using an ozone generator than that's not the issue. Start with the Epson Salt, CalMag, or MagiCal

Check this out: Text (Ozone Damage - Figure 8)