Pretty typical signs of calcium/magnesium deficiency.
This deficiency started at least two weeks ago before it started showing in the leaves, so it will continue to get worse until your increased dosing of cal/mag starts to take effect. Your new growth should be symptom free.
A dose or two of soluble trace elements, available from any garden centre, never goes astray either.
She doesn't need extra feeding, just extra cal/mag or more than you have been giving.
As I said earlier, there is a time lag of when deficiencies occur and before symptoms start showing in the leaves, about two weeks or so, so any correction will also take about two weeks to show as well. The damaged leaves will not recover, once damaged they stay damaged, but all new growth should be fine if you increase the cal/mag. Giving more/extra of the same bloom nutrients will not solve a cal/mag deficiency, you need to add more cal/mag to the over all feeding.
Hope this helps, Organoman.