Hi there, Was wondering if anyone could confirm if the following is either a Boron and/or Nitrogen Deficiency. Or something other and how to correct the issue when I am already feeding nutes. Don't want nute burn Experiencing some lower leave yellow discolouration but also new growth is yellowing. Grow details. Grow tent 60cm x 60cm x 180 Soil - Canna terra - already PH at 6 9 weeks from germination. 600 W Mars hydro LED - 18 on, 6 off Temps - 22- 28 degrees Celsius. 45% - 55% humidity Passive intake Exhaust outake Strains - Critical Cure, Euphoria and White Rhino- mostly Indica based. House and Garden Soil A and B - 3 mils per litre. Book says 5 but don't want nute burn. Watering when needed and pots are dry and light- around every 4 days. PH water at 7.2 to get run off between 6.5 and 6.8 I have had some PH issues, trying to get the run off right because the canna soil was dropping the pH so much. It has to be as high as 7.5 going in to get 6.5- 6.8 run-off. It's a pain in the arse. On average I am around 6.8 which is a bit high for my liking. I'm hoping I can add something to correct it. Any help would be appreciated. Sent from my iPhone using Grasscity Forum