Entire Plant Turning Yellow?? - Pics inside!

ok so all these plants are the same age, about 4 weeks into their vegetative cycle, and half of them have begun turning entirely yellow!! im not sure what to do. im growing in a tent with one 600w and one 400w MH light. both have EXTREMELY good ventilation. the temp in the tent is about 26 degrees Celsius. i have them on a feeding schedule once every 2 weeks, using a 30-10-10. with the occasional foliar spraying of a diluted seaweed mix and high nitrogen bat guano. i checked the ph of the soil just now using a digital soil ph tester, and the all range between 7 and 7.5. two of the plants are rather small im guessing because they were in these stupid clay pots at first but now they are all in 1 gallon pots. im using a miracle grow soil mixed with Llama manure. anyone have any ideas of what this could be? Thank you so much for any help!!

here are the other half of plants all looking good, all under the same schedule of feeding and everything

What kind of miracle grow do you use?lTo me they look heatlhy maybe need to feed more that what I'm thinkThat real greeen and drooping colormaybe up the ppm'spop one or two out of the pot and check the roots to see if their root bound!

you do have some strange looks going on, no obvious burning
but you're doing some strange things, foliar feeding can do bad things if done too strong
and MG and llama poop together? i've never heard anyone trying that combination
a PH over 7 usually doesn't help matters either

ok let's say its the llama manure is there any way to leech the soil of it? Or would too much manure in soil have that type of effect? Because the yellow is affecting the entire plant, I repotted about 2 weeks ago from pretty small containters but they all looked great then....other than the two plants in the clay pots which seem to have stunted their growth.... and when we repotted my was when we added the manure... as for the type of miracle grow I'm not at the place right now so I can't check but when I get there ill let you know.

i'd think twice about foliar feeding, it can work, but it can also cause a lot of grief, you don't need to foliar feed to have healthy plants
raw manure will often burn, composted manure is more advisable
if possible, i'd suggest a new soil mix - MG soil can work very well for some, but it's tricky, it's really more of an experienced grower's soil

Any chance they're a different strain than the healthier plants? Some strains are more sensitive to things, than others, which is why I ask. Looks like it's either overwatering, or a PH problem, to me, causing them to starve for nitrogen. What PH is the water(or fert mix) you're giving them? How often do you water?

I drench the plants about once a week whenever the soil is dry and I check the ph its about 6.5 to 7 when I water them.

Oh yea and im not sure what strains they are....I had been collecting the seeds for about a year (very hard to get seeds in my area)

sounds like the watering schedule is good, the soil being 7 to 7.5 sounds like it could be MG Organic Potting soil
which has that kind of of PH if memory serves, that's not a great PH range for cannabis

Do you think if I leech the soil on the next watering with a 6 - 6.5 ph water would help balance it?

josifer said:

Do you think if I leech the soil on the next watering with a 6 - 6.5 ph water would help balance it?

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it could, but if you have the time release type soil, leaching out all the stuff isn't so easy
i'd recommend doing a search on MG soil and flushing, i think it takes more flushing to clear out MG time release soils

Will do! Hey thanks alot for your advice, ill give it a shot on the next watering and post some new photo's with an update. And if anyone else has seenseen a similar situation please chime in and lemme know!

Looks deficient to me - definitely not nute burned.
Why would you recommend a flush when it is obvious they are not nute burned?

I would bump up the nutes next watering, and not flush since it is obvious they are not nute burned.

angelsbandit said:

Looks deficient to me - definitely not nute burned.
Why would you recoment a flush when it is obvious they are not nute burned.

I would bump up the nutes next watering, and not flush since it is obvious they are not nute burned.

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they don't appear burned, but there is something not right, look at some of the good plants, there are some issues there that are building
flushing gives you a blank slate(in principle), at which point only what you feed is what that plant is getting
i'm not a huge fan of flushing, i'd transplant to new soil, but that's a personal preference

The plant needs nitrogen - flushing would only remove more of the required nutrients that the plant is obviously in need of.

angelsbandit said:

The plant needs nitrogen - flushing would only remove more of the required nutrients that the plant is obviously in need of.

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that is true, you sacrifice what is in the soil in order to be sure that what you're feeding it
no argument in that they look nitrogen deficient, but is that because there is not enough nitrogen left in the soil? and this soil has been boosted with llama poop(according to OP)
flushing is a risk, OP(since he has multiple plants) could add some nitrogen to one plant, flush the other(and re-feed)

Not a bad idea to do a tester plant with one of the weaker plants that I don't mind losing ill try that thanks again for all your input guys biiiig help

P.S. I'd keep foliar feeding, til you get the problem sorted, because for one reason or another, they are not taking in what they need, via their roots. Also, it's not much danger, either, as long as you follow a couple things.....PH balance the mix,(I use about 6.7) just like you would anything else, and don't mix it super-strong. I use veg fert(both Dynagro and Miracle Gro, depending on my mood.lol), mixed to about 1/2 strength, and as long as you give them a good soaking with straight water, every 1-3 foliar feedings, you don't have to worry about ferts building up on the foliage. The best time to do it, is about an hour before the lights come on, so that they are dry before then. I do it with the lights on, as well, without any issues, but try to do it just before then, to play it safe. Also, there's no risk of overfert, with foliar feeding, 'cause they'll only take in what they are lacking, nothing more. It's a good 'safety net', so to speak, because you can correct deficiencies before they start to show, in the form of yellowing, etc....

Ok awesome, cause I soaked high nitrogen bat guano in airated water for 24 hours and sprayed it all over them this morning so hopefully that will show some signs of helping it