Some fan leaves die off naturally but a full healthy plant won't. Maybe you have a calcium deficiency it you have brown dots too. Have you stopped using Nitrogen based feed? I always use a little bit until last two weeks to keep them nice and green. If you have purple stems too its most probably...
Have you sprayed your plants recently with a pesticide? if so chances are it has soaked into your cannabis plant and your cuttings will usually mould and die, although the plant will handle it, it will try flushing it out slowly, stop spraying if you are continuing to, and water with distilled...
I am quite new to growing and I was just wondering if my babies are looking healthy? I haved topped the cheese plants (medium and small plant) and left the large to grow naturally. there is a 2 week gap in the photos of the plants to show you how they are growing