Athosanswered grow question 7 years ago There seems to be a couple of issues there. On one hand make sure you are not over watering. Secondly, are you measuring the EC/PPM of your feeding? I checked the Organic Bloom you list on your diary and it's very low on phosphorous for a bloom nute, actually it has a lot more Nitrogen.
For such a low NPK (3-2-5) you are using a really low dosage.
What I see is a serious P-K (phosphorous and Potasium) deficiency and some Nitrogen excess.
The chlorosis with rust spots indicates Potassium deficiency.
The leaves with dark / black spots, bottom ones drying and withering are symptoms of a serious phosphorous deficiency.
Your plants are eating themselves in order to produce flowers.