Yellowing during the 4 week of flowering

[dirtydolla]

I'm using Pure Blend Pro for Soil as my nutes. My plants are losing leaves that have turned yellow. I'm in the 4th week of flowering and plan on using Kool Bloom in another week. I use to use Dyno Bloom but the guy t the store recommended Pure Blend Pro. Are my plants yellowing because of the nutes or is everything alright.

[ECOBANE]

Hey there fellow Michigander, hows it goin? im not sure if u browsed this site but it has an awesome grow forum, I have learned so much from this forum. All the info contained here is priceless. My suggestion is to check the growing forum, and read read read otherwise you will get some smart ass coment how the answers are in the forums( not always but alot of the time). Im no grow pro myself(first grow) but without this site i dont think i would be doing as good as I am. well if u need any help in here dont hesitate to ask.

Peace:stoned:

[Big len]

post a pic a lot of info here you should be able to find out something, welcome to the site.
Big Len