Hello everyone I was choosing a correct section on this forum to post this and thought its kinda a problem so here is whats going on. I am using a COCO From Atami big 50L bag. and I am using Nutriens for hydroponics brand Advanced Nutriens. I feed it calmag, that I feed a little and mostly just the Main A+B coco and big bud coco + b52 + overdrive soon. I feed them 1 times in 2 days with nutriens. The other times its only just water. PH is usually around 6.8 and EC never goes above 0.5.Humidity sometimes jumps to 75% during night and day is like 50-55% but dehumidifier will be applied soon. And they are now mid flower 3-4 weeks left and they have some issues on the leaves like some are yellowing towards the top and some leaves have black spots looks like a burn. I use 1/5 recommended dose. My main question is : are those nutriens ok to even use in this type of substate and feel free to add anything. Cause I am thinking its the Nutriens. Thank you
I've never used Advanced nutes but a lot of people do without problems. Your pH is too high - 5.8 is preferable in coco - not 6.8. I'm surprised you made it this far without problems using that pH. A pic would be nice - preferably under natural light. Good luck.