Leafs turning yellow and falling off help

ill post pics in a bit but in the last week the bottom leafs have started to fall off after turning yellow, what could make her do this? im a cuple weeks in to flowering with my last grow it did this at the vary end to this is too soon to be done.
any help plz
thanks

Try giving them a blast of nitrogen. If ya think that is not it then check your mediums PH.

If they're on the very bottom don't worry about it. As long as newer growth looks good, you'll be fine

ok ill look in to that and see what i come up with. ive been waiting it out to see what happens but i was thinking that there not getting enought light so i changed and pulled them a little diff. i have a thread going in the cfl fourm. here are the pics tell me what you think.
thanks

Oh yeah...I think it looks fine. Its just one of those things ya know....a pic of the entire plant would be nice. I'll check your thread.

npk def. Unless you're towards the end of flowering, then it''s normal.

Later.

N def. yes maybe....P and K no.

I actually don't care much about my post count.
I'm taking defensive driving right now and I'm bored as hell, so I just decided to post in random threads.
Usually I just follow grow journals actually.
And actually I thought my answer was pretty suficient based on the question he was asking.
I was only giving him the knowledge that I have learned from this website and other guides.
Most of my posts are good vibes, there is nothing wrong with that.

I just went through your posts, and you are right you are full of good vibes. I hope I didn't bring you down man. I'm going to remove the mean stuff....sorry....can you tell I'm having a bad day? Keep on doing what you're doing man...you're not "one of those people" but I hope you know what I'm talking about in regards to the whole useless post thing. But still the diagnoses wasn't right....except for that yellowing towards the end of flowering happens often. Again..my bad your cool man.

It's ok man, it did bring me down a bit haha, but I've been in your spot, don't worry about it.
And nah, I'm not "one of those guys". could careless about my post count actually, but I do follow about 30-40 grow journals, just a nice hobby to pass the time.
Anyway, don't worry about it. Not taken personally.
Hope your day gets better!

Later.

/end hi-jack lol

ok thanks guys my buddy let me have some of his bloom burst and i looked at the specs and it should help. i think ive got about a month and 2 weeks to go but well see.

Sounds like a plan man! Were you not already giving them a P K regiment?