Yellowing Lower Leaves

Today marks the fifth week of flowering and I noticed that the leaves near the bottom of the plant are beginning to yellow. Is this normal or something to be concerned about? I changed the reservoir a week ago and added an extra tsp. per gallon of Ionic Bloom (bottle recommends 4 and I put in 5). The pH checked out although I'm yet to check it today. I understand that towards the end of the life cycle leaves naturally begin to yellow, however it seems like there are at least a couple more weeks left (1st orange hair seen a few days ago). Thanks in advance for any advice. Here are some pics.

Some shade-leaf yellowing is normal. It happens when you change to bloom nutrient. It has little nitrogen in it which plants use in the growth period..

This is a possibility:

Grow Marijuana FAQ, Cannabis cultivation - marijuana growing tips & photos

<P>That link didn't help me at all. The only thing I want to know is if this is a serious problem and what I should do about it if it is a serious problem. The link essentially said nothing but nitrogen deficiency and wasn't very specific about that.</P>

Here is a close up of the leaves.

This is not a problem.That is very normal at 5 wks flower,some time i see this at 4wks.these plants do this near the end of flowering,even outside with no attention they will do the same.Nice plants.

Thanks for the advice Ron, I just ordered a 30x microscope so I can check out those trichomes. Hope to have a very merry christmas, you do the same.

this exact same thing is happening to my outdoor plant right now, at first i began to worry about it but ive since realized that this is completly normal as the plant is taking nitrogen from the fan leaves to focus towards the buds the result of this is the dying off of those fan leaves

She has little need for Nitrogen as she wants Potassium and K looks like maybe a little metal too. But the Shade leafs will go yellow and fall off as that is the cycle. If you can next time try keeping those lights close to the tops (without burning) and you will see closer node spacing and tighter buds. If you wanted more tips or tops or spears also pinch her back at about 5 inches tall she split and branch. Do not pinch back or prune or trim for at least 4 weeks before flowering. You also will see her Flower a bit more even if when you are ready to flower flush with B-1 and then give her a day or two then shut the lights off for 36hours straight and resume to a 12/12 and add some Co2 to those in the first week or two of flowering and make sure it falls on the bud area you will see tighter buds.

I too am having yellowing leaves at the bottom and I am also getting brownish marks on some of the leaves. Only the lower leaves have been turning yellow and dying ever since I put them into budding. I have attached a few pictures so you can see what the problem is. I am using a hydroponic system I made similar to the aero garden which is still use the pods from for my medium. I am not sure why these leaves have been dying can anyone help a fellow bud toker save these girls?

please help my leaves are so much more yellower, i'm worried about this, should i be?

i'm at the end of week 4, using coco soil,
nuit's - coco A+B, coco boost, hygrozyme, cannazym. goin to start on the pk as of next wk to......
pots are 7.5litres
fresh air in, extraction on all the time due to heat

please help

mr.dj said:

please help my leaves are so much more yellower, i'm worried about this, should i be?

i'm at the end of week 4, using coco soil,
nuit's - coco A+B, coco boost, hygrozyme, cannazym. goin to start on the pk as of next wk to......
pots are 7.5litres
fresh air in, extraction on all the time due to heat

please help

Click to expand...

im using canna at the mo and u said week 4? im just start week one and how much did you put anb in?
mraliens