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I am doing hydro and havnt noticed any bugs in the grow rocks or anything like that. As far as pH and tds goes I check those multiple times daily. For most of the grow the pH has been balanced to 5.3 or 5.4, but every day it manages to go up to near 6 before I can bring it down again. The pH has been in this range for the entire grow and the necrotic patches and brown spots have just recently started. With tds, I measure once or twice a day and generally it is lower than the day before, but sometimes I think that is just because I add water since she drinks a quart or so daily. Sometimes even after adding water though Ill notice the tds reading go up a hundred or so ppm from the previous day, which worries me. I generally change the nutrient solution every 7 days, and also at the same time I clean the entire water tank, pump, water heater, etc. Also the water temp is around 76F and has been nearly the entire grow. a couple weeks ago the tds level was 1780 ppm at the very beginning which makes me think thats what could've burnt her. One of the main nutrients I add is epsom salt, so I think she is getting enough mag, and I recently gave her some organic liquid nitrogen and also the bloom nutrient I am using is 0-10-40 so I may have burnt her with potassium. Thanks again for all the help. Any ideas still?
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