Quote Originally Posted by Rusty Trichome
It's not light burn or heat issues.

Looks like moisture retention or possible transplant shock. Make sure the soil is near-dry before watering or feeding. Cannabis prefers a wet-dry cycle. When was their last transplant?

Full-strength CalMag is unnecessary during the growth stage, and it will cause problems when overused.

Did you top her already, or is that just how it's growing? What are the overnight (low) temps?
I am pretty sure not an over water , I did that last grow and did let dry before water- I did transplant 8 days ago though. I was told by Botanicare rep to use cal mag every water and feed with RO water - I am only using a small portion of recomendation - I have not topped , natural growth pattern there - night temps are 75 to 76 currently and have been since start thanks for your help again
littlemountain Reviewed by littlemountain on . yellow tips- what do you think ? Ok - here it is- soil mix is 6 to 2 pro-mixBH and Happy Frog with 25% perlite -fed the plants first time 3 days ago with 10ml of pro-blend grow, 10ml liquid karma and 10ml cal mag because of using RO water -mixed with 5 gallons at a PH of 6.6 - the light is a 1K MH the canopy temp has been 81 at the highest the light was about 30 inches away- the ambient temps were lower and so was canopy temp- I have raised the light in case this is light burn- this is the only plant showing this problem at Rating: 5