jack herer 5 weeks

1200 ppm...dwc set up....5 1/2 week into flowering ...ph at 5.5 with flora series...and liquid karma.......its in a 3x4 closet with s 6" inline with temp at 80-83f....can anyone tell me if this is nutes burn or excess heat?......constructive criticism is highly suggested...ty

Sweet looking good!

Doesn't look like nute burn or heat to me. Maybe just a little nitrogen deficient, which is ok at 5 1/2 weeks. Could be a little nute bun, but looks more like yellowing and drying out than "crispy tips"