im about 2 and half weeks from harvest and im getting some necrotic rust spotting im use house and garden nutrients and advanced sensical bloom and carboload, cocco's H&G entire line my ppm is at 1200 and dropping it 150 ppm each week before flushing i think i might be flushing incorrectly cuz i thought it was over fert so i flushed. but i flush with clear ex and i ph to 5.8 same as my feed. input would help thanks. i also rock and RO and i use roots cocco's
Well you are kinda lucky if you are 2 weeks away. At 2 weeks a person should stop with food and just use water, if you are a dirt bagger. If your soil does not have enough perlite-then flushing the medium will compact the soil resulting in a mass kill off of beneficial bacteria/fungi and also make it very difficult for o2 to penetrate the soil and get to the roots. If you are a hydro person, then it's easy.