P deficiency. I cannot measure soil PH but it's "Biobizz Light Mix" and I use suggested BioBizz nutrients. Now is cool here and the temp range is around 17-13 °C. There's a method to fix the issue? Should I heat the box?
You are giving too much nutrient! You are experiencing a nutrient lockout
Have to give nutrient and water 2 or 3 times first, then 1/2 dose max and they suggest biogrow until the end of flowering i will use it the first 2/3 weeks of flower and then cut it out
@MangoDudu I am going to follow your suggestions. I can trigger exhausts and fans without problems.
If I understood well I have to use only water for 2/3 times then add just half dose of BioBloom and TopMax. Is it correct?