i think you can totally up your ppms. my plants are on a 1200-1100 ppm diet and they LOVE it. when i was doing around 800-900 ppms they showed signs of slight defeciencies. i also agree hanna meters are shite. totally utter shite. get a blue lab truncheon ph meter or an oakton meter. also for my feeding schedule this is what i do. my first feeding in flower i do a mix of bloom and grow. half way thorugh my flowering period i do another feeding of a mix of bloom and grow so far my plants really like it.
romdog11 Reviewed by romdog11 on . Nitrogen Deficiency in Flower I am pretty sure I have a nitrogen deficiency. The bottom leaves are completely yellow. I am two weeks into flower and coincidentally I'm due for a res change tomorrow. Could this be why? My nutes are Botanicare Pure Blend Pro Fruit and Flower 2.5-2-5. Its only appearing in one or two plants as of right now. If its not just my plants signaling that its time for a res change, what's the best way to add nitrogen without hindering the flowering process? Rating: 5