Definitely hungry. I have never grown an auto. I can say that I take my rooted clones directly to 2.0 - 2.2 and they just explode. How long has it been since you changed out the reservoir? If you use the calmag to get you up to about 250 PPM and then go with your base to 1000 PPM then you should be good to go. If using the Armor Si with RO water I add it first, then calmag, then micro, grow and bloom. I found that I have to add the armor si last if running my tap water. Basically I use it for a pH up buffer.