Leaves starting to yellow, help please (with pics)

Ganga89

Well-Known Member
hi this is my first grow so i'm worried about it. my older leaves are starting to grow yellow at the tips and this is spreading to the rest of the leaf.

i've looked around the forums and the most common problems are lack of nutes. i added nutes but perhaps maybe i didnt add enough but these were with growers who were formerly just adding straight water. i have a humidity issue as well so i wanted to try and find the problem first before i attempt to solve it, i dont want to over fertilise.

the humidty is only 30-40% most of the time and i haven't been able to increase it whilst the MH lamp is on. its between 50-60% whilst its off but as soon as i turn it on it lowers. could this be the problem or have i not added enough nutes.

below are pics of the plant over the last few days, pics are numbers with dates in dd/mm
 

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ceestyle

Well-Known Member
yep. for plants that age burnt tips are usually actually because nutes are applied TOO liberally.
 
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