Brownish red spots from hell..Help!

Okay ive been sitting with a pair of scissors all day trying not cut and dry got some stuff that taste like rancid putang while these plants taunt me. Anywhow light color leaves with rusty brown spots shown on some leaves my plan is to up N and use turbinado sugar (4 weeks into flowering 9 week plant) does this look like the right course of action ? Please any sound advise, mutually appreciated.

Looks like a salt build up, next watering give them a good flush and then go back to flowering nutes with N.

Much respect BUD was thinking sugar flush might knock it out.

brown spots next to da vains is mg def caused either by lokout or nutes

hydro or soil?if your plants are flowering and it on the lower growth i wouldnt worry about it.it could be calcium def.