Def nitrogen or mag and what can I do?

[TryComb]

This is my first grow. It has been going well so far, now I have a yellowing problem. I'm not sure if this is part of this plants cycle. I know yellowing can start in mid to late flower. Strain is unknow so I'm not sure how long they will go. An comments or critizim. I could just be freaking out so yea. thanks everyone for all your help. I posted some pics I hope you can see. Thanks agian.

TC

SOIL:

How long has this problem been going on? a little over a week
What STRAIN are you growing?bagseed
What was the establishing technique? (seed or clone?)seed
What is the age of your plants?2 41 days in flower 1 is 34 days in flower
How long have they been in the soil mixture they are in now? since birth one transplant
How Tall are the plants?18-22
What PHASE (seedling, vegetative or flower) are the plants in? flower
What Technique are you using? (SOG, SCROG etc) none
What size pots are you using? (Include how many subjects to pot)round 7 in tall and 6-7 diameter
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) 30-40 composted bark, 20-25 peat, 8-10 verm (fine) 30-40 perlite (this is a local nursery mix)
What Nutrient's are you using?
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* half for big bloom and 2 tsp of tiger bloom (Fox Farms)
How often are you feeding?every other
If flowering, when did you switch over to using Bloom nutrients? light does at end of veg and stopped after the first week
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)in the order
What is the TDS/EC/PPM of your nutrients used? not checked
What is the pH of the "RUN-OFF"? not checked
What method of pH test was administered? Using Strips? pH pen? liquid
How often are you watering?every other day or two
When was your last feeding and how often are you feeding? 6-7 days ago
What size bulb are you using?250w CMH
What is the distance to the canopy?7-8 in
What is your RH Factor? (Relative Humidity) 25-30
What is the canopy temperature?not sure
What is the Day/Night Temp? (Include fluctuation range)68-84
What is the current Air Flow? (cfm etc.) carbon filter-air cooled hood-182 cfm fan and out
Tell us about your ventilation, intake exhaust and when its running and not running ?intake is multi 2 in holes and an 8x8 light louver self contained negative air
Is the fan blowing directly at plants? no
Is the grow substrate constantly wet or moist? no
Is your water HARD or SOFT? hard
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?tap
Are you using water from a water softener? no
Has plant been recently pruned, cloned or pinched?no
Have any pest chemicals been used? If so what and when?no
Are plant's infected with pest's? no

 

[ThePotanist]

looks like a little bit of both and at this point. but it is normal at this poiint u can give a lil fish emulison or jut keep feeding balancd water till shes done

 

[Cruzin]

yes, they are deficient in calmag and nitro. pump them up, this is their time to swell up.

 

[Weedhound]

They look too big for their pots to me. I would put them into something bigger with fresh soil, (which should have plenty of nutes) and some room for the roots but that's just me.

 

[Cruzin]

do you really want to transplant that late into flowering? Those pots look big enough for me, but thats just my experience.

 

[JazzJazz]

Hello TryComb,
Do not transplant now as its too late for that. Have you checked your tric's yet to see where your at with development? Seeing how you don't know what flowering times your dealing with this may be just the plant winding down to ripen. Your at 41 days now and maybe you have a 50-56 day strain. Have you started any flush yet? It's hard to tell, but it seems like your pistels are all turing brown rather quickly...is this right? Check your trics and I think you will find that your plant is doing what it's suppose to do....ripen and start to die. It's all good but one piece of advice i would give you is transplant more than once ( should be 2-3 times before flower from seed) and finish in 3-5 gallon pots ( 5 if you the space)...you will love the results my friend.

Peace,
Jazz

 

[TryComb]

Thanks everyone for the feed back. Sorry I didnt get back sooner I was out of town. Back now tho.

Jazzjazz-
I have been giving them just water since after the leaves started yellowing more. What is the best way to check the tric with I have a portable micoscope from radio shack but I tried using it on just a dried bud from my sack, but it was tough to use. Do you know what would be good??

TC

 

[TryComb]

Crap I forgot yes the pistils have been turning brown. I heard that can be a sign they are nearing the end??

Thanks

 

[Weedhound]

Usually yes but there can be other reasons for that as well. You REALLY have to go by the trichomes to tell harvest time correctly. What day of flowering are you on? I'm sorry but I disagree with transplanting "being too late to do" I've never found a cutoff date on transplanting and I've transplanted plants into different containers no matter WHAT age they are and I find it the easiest way to fix a fair amount of soil problems. In fact, if you are careful, the plant should barely notice and there certainly should NOT be any negative effects to the plant aside from the day or two it takes to figure out it now has more room and fresh nutes, helping restore soil chemistry. General rule is 1 foot main stem per gallon of soil.

Also, check out Stitch's excellent Sick plants sticky........really good info there as well. Most likely better than mine as I am a hydro grower at heart.
good luck.

 

[Crush]

They look too big for their pots to me.

Yup.

But myself I wouldn't put them into another pot at 41 day flower and would just take this is a learning experience.

What's happening is that since so much of your potting container is root-balled, it cannot feed off the natural soil ferts.. especially organic.

You need to supplement some ferts when watering. I'm talking a flower forumla from the hydro store.. not a molasses tea or anything. take it LIGHT on the nutes and do NOT follow the bottle or you can cause more damage.. Ask someone who knows in the soil forums how much nutes to give it. You seem to have a good amount of Indica in that stain and it could probably handle a fair amount of nutes.

If you had another strain then you might be suprised that you would have no problems at this stage if you did the very same things.

Remember, don't over feed. Monitor the new growth and make sure sure the leaves are not too light, not too dark.

 

[Weedhound]

Yup.

But myself I wouldn't put them into another pot at 41 day flower and would just take this is a learning experience.

What's happening is that since so much of your potting container is root-balled, it cannot feed off the natural soil ferts.. especially organic.

You need to supplement some ferts when watering. I'm talking a flower forumla from the hydro store.. not a molasses tea or anything. take it LIGHT on the nutes and do NOT follow the bottle or you can cause more damage.. Ask someone who knows in the soil forums how much nutes to give it. You seem to have a good amount of Indica in that stain and it could probably handle a fair amount of nutes.

If you had another strain then you might be suprised that you would have no problems at this stage if you did the very same things.

Remember, don't over feed. Monitor the new growth and make sure sure the leaves are not too light, not too dark.

I like this answer better than mine. But generally soil chemistry gets off with the dying off roots that are all cramped and suffocating.....consider also a zyme product to try and stave off root rot.

good luck.

 

[TryComb]

I am using big bloom and tiger bloom from fox farms. As I stated before I stopped using them about 6-7 days ago maybe more. Are you saying I need to add more nutes? I was still giving them nutes for a few time when the leaves started yellowing. It was not doing anything so I stopped The day is now 44 still yellowing and some brown crusty spots, (there is some of these spots on the previous pics. Could it just be they are close to the end and they are dying?? I checked the trics they are clear for the most part maybe a few cloudy. Maybe a ph prob?? Anyone seen anything similar? I think Ph lock out of mag. Anymore thoughts out there guys??

Thanks

TC

 

[Weedninja]

I have a taste for exotic sativas, so I have a pretty decent amount of experience with root-binding. I can tell you, almost without a doubt, that the reason that your plants are yellowing is because they don't have a large enough root system to uptake the nutrients necessary to support them. As it is, your yield will suffer.

The short answer to your question is that they are showing an N and possible Mg deficiency. The more accurate answer has already been given to you by Wh and Crush.

 

[texas tea]

i had a root bound girl in 12/12 .i cut the bottom off of the planter i had it in and set it on top of the other container ,submerged a little bit and allowed the roots to grow into the container underneath until she was done .Peace

 

[TryComb]

Thanks everyone for your replies that helps alot. I just need someone to spell it out for me. I will transplant to a bigger pot that should help. Am I correct in thinking this?
Thanks again

TC

 

[Merfolk]

Good luck