Situation is getting worse with my blackberry auto day 35

Do you have a PPM/EC tester. Looking at your plant she is defiantly suffering from nitrogen toxicity( leaf tips drastically curve down "The Claw"). 1. Make sure you PH your water correctly. You only care about PH going in. 2. Test EC going in and EC coming out. If this is drastically different you might want to use only water until you get the EC to around 1-1.5. 3. The brown spots to me look like a cal-mag deficiency. BUT this could be a lockout from having to many nutrient salts built up in your medium. Don't try to just "Wash" it out with one watering. This is a last resort method as it can wash away the good or even worse drown the roots and cause root rot.