Well I'm treating for Phosphorous deficiency, someone else suggested nute burn...but I've seen improvements so far with the nutes, so if it doesn't completely solve the problem I'll do a flush
The leaf tips burning look like Mag def., the spotting looks a combo of Phosphorus and Potassium def. and the leaves curling downward look to be a Cal def. All in all it just looks like you need more nutes but in small increases so you dont burn. More info would help tho.