Help needed! Flowering 5th week is this phosphorus deficiency or nute burn?

Curryguy

New Member
2/8 plants have this problem. Temperature has been bit high (80f). I use GHE flora bloom&micro with Lucas formula + calmag + bloombooster. Its 5th week of flowering. This problem appeared 3 days ago to few leafs and has been increasing.

PH has been mostly between 5.7 - 6,2.
The EC started to rise quite fast 1.5 -> 1.79 (in one night). So I did change the res, flush yesterday.
After that the EC dropped from 1.29 -> 1.19 during last night.

Please help I am affraid I lose the plants, this is my first grow.




  • Tent: Gorilla Shorty 4’x4’
  • Lights: Mars Hydro TSL 2000 (2x300w)
  • Exhaust ventilation: UFO THERMO (400 m3/h / 235 cfm)
  • Fresh air: VENTS QUIETLINE (200 m3/h / 117 cfm)
  • Carbon Filter: PRIMA KLIMA (480 m3 / 282 cfm)
  • Air movement: 2x 15cm/6" Fans
  • Hydrosystem: Atami Wilma 8 drip irrigation with hydroton
 

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