Hi .. i wud say a potassium def. But do a flush and check ph on run off . This may make it more clear wats wrong. I also looked and thought cal def due to brown egdes and spots . They are simular!! Too much potasiun can cause cal def .. wat nutes if any are ya feeding? I really wud get a ph tester love as it cud be something simple like high/low ph blocking nutes etc that shows ya deficiencies. If giving nutes then give em half dose wen flush. Yr temp seems ok as i too stick at 72-74^ . ... like i say check yr ph and run off. This will help resolve problem. Hope this helps. Good luck. Let me no how ya get on xxxx
Hi Kym, I didn't do a flush but I did giver her a good watering with about 3 L plain tap water. I checked the pH ( think the probe is kinda working) and it was about 6.7 I think spray should be ok. The brown edges you refer to are actually purple- think the camera does not pick it up well! I wonder if the topping I did has anything to do with it?.. Will check again today at lights on but I think newer growth may be green so maybe she is recovering. Update to come Thank you for your input. Sent from my iPhone using Grasscity Forum mobile app
The stems are looking kinda purple which is the start of a potassium deficiency unless he strain's genetics is like that but since the leaves are also showing K def I would add a K supplement or add more nutrients to your next feeding Sent from my iPhone using Grasscity Forum mobile app