Indoor wondering about yellowing

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My plants are 7 weeks old....and starting to yellow a fair amount. Is this too soon for plants to be doing this normally? Ive been feeding full strength past couple times to fight it, now im thinking it might just almost be done. The buds still have alot of swelling to do thats why I dont know if its normal.
 
When yellowing of the fan leaves starts depends a bit on when you switched them to bloom nutes. If you did so when they first started to show pre flowers, around week 4, then they will finish earlier, around week 8-9, so yellowing at week 7 would be normal. If you waited to make the switch until vertical growth stopped, around week 5-6, then it's a bit early. In that case I wouldn't expect them to start yellowing until around week 9.

Some pictures would be helpful so we can see which leaves are yellowing. If you only switched to bloom nutes around week 5-6, then it could be a pH issue. If the pH is off you could be experiencing some nutrient lockout.
 
Ya I started only bloom nutes around week 5 and the start of week 6. Most of the yellowing is fan leaves. My camera is broke at the moment. I want them to go as long as possible considering the buds ain't that big. Once yellowing starts do I have another two weeks and should I start flushing?
 
That's a bit early, so there could be some pH involvement. I usually wait till the fan leaves are about half yellowed, then start my cleanse. Usually about 2 weeks to go from that point.
 
Im pretty sure the ph is ok on both after just feeding again. They are starting to slow down on needing to be watered if thats normal? The fan leaves that are yellowing are just droopy and makes the plant look like its dying. Maybe im just not used to it. I just fed it with cal/mag and 20ml of tiger bloom. I think there is a problem though cause I see yellowing starting on the leaves around the buds. Oh and all of this happend overnight from some time after lights went out to when I woke up 8 hours later.
 
Oh I forgot also that overnight the all the branches that the colas are on seem weak and need to be supported, or the buds are swelling and making them do this overnight?
 
m8, you need to post this in the infirmary... also they will definitely need pics - even crappy phone ones are better than none.

It does sound like a deficiency, which could be caused by PH, a build up of salts or simply not enough nutes. I would check your PH run off, then possibly a good flushing with PH'd water and quarter strength nutes - it may take a day or two to pick up after flushing as it does stress them slightly.

the branch weakness is interestingly similar to the issue I had (in my NL grow journal) - ended up dumping my BioBizz nutes and going chemical cheapo style.. not saying thats the answer - but does point to deficiency.
 
The ph is fine. I just need like another 15 days out of these babies I hope they make it. After the feeding they kind of perked up a bit. This whole time ive wondered if I havent been feeding enough. Today was the first time I gave it full strngth bloom nutes.
 
its really hard to give a diagnosis remotely and even harder without pics. I guess they are big and you say yellowing and general weakness (i.e. no spotting etc.) and week 7 I would have already been on full strength nutes - so it could be just under nuted.. flush if all else fails, clean slate and all.

what is the NPK of the nutes you are giving her, and are there any micro nutes in them?
 
I've got the same sort of problem with my Think Different there's a good sticky in the infirmary section that helped me out to diagnose the problem, I think mine is a phosphorus problem, here's the thread if it helps. https://www.autoflower.org/f74/self-diagnose-your-plants-basic-deficiencies-list-11.html

Here's my grow so you can see what I'm on about with the yellowing,https://www.autoflower.org/f44/thinking-different-ganjageezas-1st-auto-grow-22309-2.html I've flushed her just in case it was a lockout or salts build up, but like I said mine looks more like a phosphorus deficiency.
 
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