Problem: So i have 2 Fast buds star dawg growing in the same tent, under the same lights, same conditions and same nutrient schedule, yet one is showing yellowing of the leaves, i thought it was a potassium deficiency but i'd like an experts advice. i have also raised my lights by 4 inches or so in case this is light burn
-Medium/grow method: Soil - Biobizz All Mix
-Feed and supplements used: Biobizz Biogrow & bio bloom per below schedule + 1ml/l vitalink calmag + misted every day with 1ml/l calmag solution
-Water source: tap water, 50ppm on 640 scale is around 0.04EC, there's not a lot in it
-Strain and age stardawg by fast buds, germinated on 27th march so around 5 weeks
-Climate: lights SP250 18hrs kept at a temp of 25 - 27 celcius, lights off temp drops to around 16 celcius
- Light used: mars hydro sp250 18/6
-Additional info: symptoms appeared quite quickly, some calmag deficiency early on corrected by using 1ml/l in the feed from wk4 and foliar applications each day at 1ml/l and while lights on (is that an issue?)
one point to note, its twin, is perfectly healthy despite the same calmag issue i mentioned (i have photographed it below for your opinion so you have a complete picture). one last thing, they were topped and lightly LST'd
thanks in advance for your advice!
This is the defect:
below is the pervious calmag deficiency which i think did not progress after i corrected the feed and began daily foliar application by misting
Close up of a brown spot and leaf curled down slightly which may or may not indicate something:
finally, the complete plant:
-Medium/grow method: Soil - Biobizz All Mix
-Feed and supplements used: Biobizz Biogrow & bio bloom per below schedule + 1ml/l vitalink calmag + misted every day with 1ml/l calmag solution
-Water source: tap water, 50ppm on 640 scale is around 0.04EC, there's not a lot in it
-Strain and age stardawg by fast buds, germinated on 27th march so around 5 weeks
-Climate: lights SP250 18hrs kept at a temp of 25 - 27 celcius, lights off temp drops to around 16 celcius
- Light used: mars hydro sp250 18/6
-Additional info: symptoms appeared quite quickly, some calmag deficiency early on corrected by using 1ml/l in the feed from wk4 and foliar applications each day at 1ml/l and while lights on (is that an issue?)
one point to note, its twin, is perfectly healthy despite the same calmag issue i mentioned (i have photographed it below for your opinion so you have a complete picture). one last thing, they were topped and lightly LST'd
thanks in advance for your advice!
This is the defect:
below is the pervious calmag deficiency which i think did not progress after i corrected the feed and began daily foliar application by misting
Close up of a brown spot and leaf curled down slightly which may or may not indicate something:
finally, the complete plant: