Purple tips on my leaves why?

CaliTree420

New Member
HELPP!!-My cannabis plant is turning yellow and has purple tips the tempature stays at 80 and the strain is trainwreck not sure why it would turn a dark purple tint its 6 weeks flowering and im using Fox Farm tiger bloom I will be trying to post pics.
 
Pictures would help :), there is a purple version of Trainwreck..FYI. There is also a GDP (grand daddy purps) Trainwreck cross, that might explain the purpling, if it's an 8 week flower strain you would start to see the leaves yellowing, that would be normal. But, if you could load up a picture that would help us diagnose better.
 
This is what phosphorus deficiency looks like.

phosphorus11.jpg


Also, maintain good pH.
 
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