Nitrogen and Phosphorous Deficiency??

I've had quite a time and am learning so much however I can't seem to keep them healthy....

I am watering with tap water.
Adding Botanicare Pure Blend 3-1.5-4 at 1/2 strength every second feeding (water every 3-4days)
humidity is now at 34% however for the last week prior to moving them to their new home, they suffered for two days under 98%.

The temp in their new home is 94F and I know this is high but I have to install my 500cfm inline fan today in the hopes that this will lower the temps...

Grown from seed and approx 7 weeks old now, I have moved them to this new home and hope to flower in a week or so. 12 females out of 16 seeds.

Soil is .9-0-0 with mixed in vermiculite and perlite 6:1 (soil to additive)

Run off PH is somewhere around 6+ (I have really cheap test strips)

Ladies are in 8" round green plastic pots and I am thinking of transplanting one last time into large "drywall mud" buckets. (2.5 gallon is this necessary?)


My problem is this...since I have moved them to the new room (4wx4hx8L) they have seriously wilted and the bottom leaves are yellowing. They were fine before I moved them. This is the nitrogen deficiency I think...

One of the ladies has reddish almost rust coloured spots on the leaves both at the tips and where the "viens" meet the "artery" on the leaf. This is what I think is a Phosphorous deficiency.

Now, I thought I was using a great product in the Botanicare line???
During my Veg I thought that a higher N is required and this stuff says it has a higher N?


Is my solution to flush with PH adjusted water @ 7, add something high in N and 0-0 for the PK to fix the N deficiency?

Do I add 20-20-20 and that will help with both? (It did once before)

Do I attribute this to the change in environment and continue on as is adding my inline fan, lowering the temps and monitoring, no nutes next feeding?

Since I have read many posts I have confused myself....

Sorry for the quality of pics, my camera is all screwed up and won't focus well. if you need better pics I can try again later today.

Any help would be appreciated.

Thanks.

Can anyone help...?

Your plants look really unhappy......:(

At 94 degrees you're really cooking them. I can't tell you much about growing in soil as I grow hydro but I certainly wouldn't worry about anything else until you've solved the heat problem since you can't even say which of these things you are seeing are due to heat stress and high humidity.....until you fix them and see what happens.

Keep in mind....I'm not saying you don't have other probs......you probably do but I don't know enough about soil to help you.

Try this link and see if it can give you any tips. Good luck. :)

International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!

I used that post to trouble shoot and wanted some validation of my thoughts...

I am fixing the heat today with an extraction fan and I hope that will lower the temps..

Good luck.....hope that solves alot but you'd be surprised at how much heat can do to your plants....and can leave an unpleasant reaction that continues for awhile after you've corrected the initial problem.

Yer rootbound. Very,very rootbound.

Don't forget drainage holes in those drywall buckets.

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Originally Posted by rhizome

Yer rootbound. Very,very rootbound.

Don't forget drainage holes in those drywall buckets.

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Now HERE is someone who knows..:thumbsup:...do what the rhizome tells you. ;)

Good luck. :)

you may be over-watering, also ... :smokin:

first thing is whats your PH do you have a meter /ph everthing before adding to your plants looks like you have a lockout of nutrients ur adding nutrients so the nutes are there but the plant just cant absorbe them yeah get thoses temps down to 90 least in veg not flower below and see how they look you might have to get temps down to 85 they look a little over watered let them dry in between watering do the by weight method pick up the pot/bags when there dry and then when there wet to get a feel for when your plants need to be watered and do your watering/feedings they say that in flowering cycle trichome production really slows at 90 degress indoors thats what I heard get a small swamp cooler if A/C is out of the question

swamp coolers add too much humidity, and will promote mold in your buds ... :smokin:

Morning Reaper- did you edit a post?

I was going to agree with you that a good-sized plant can be grown in a small pot. Went to quote you, and the comment was gone? Sorry to see that, cuz yer correct.

I think that he's probabley overwatering as well- but the low biomass/media ratio makes general troubleshooting difficult. I'm thinking that more media would provide a more stable rhizosphere- a little more forgiving. With that much plant in that little soil, chemistry can slam around a lot.

yeah image reaper is right swamp coolers are a no go in flower for veg its ok you might have to go with a mainly sativa strain looser buds they can handle heat and humidity better than indicas

new pots tomorrow, and an extraction fantonight.
hopefully I didn't shock them too much.

I water when dry (every 4 days or so) so i don't think that is the root of the problem.

thanks. I will update again.

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Originally Posted by rhizome

Morning Reaper- did you edit a post?

I was going to agree with you that a good-sized plant can be grown in a small pot. Went to quote you, and the comment was gone? Sorry to see that, cuz yer correct.

I think that he's probabley overwatering as well- but the low biomass/media ratio makes general troubleshooting difficult. I'm thinking that more media would provide a more stable rhizosphere- a little more forgiving. With that much plant in that little soil, chemistry can slam around a lot.

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yup, I did edit ... after reading it, I thought it sounded like I was disagreeing too abruptly, didn't want it taken as rude ... plus, I didn't want to recommend that he stay in small pots ... small pots are a pain in the butt to maintain the right moisture ... respect to you, Rhyzome, you know your stuff :thumbsup:

Quote:

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Originally Posted by rhizome

I think that he's probabley overwatering as well- but the low biomass/media ratio makes general troubleshooting difficult. I'm thinking that more media would provide a more stable rhizosphere- a little more forgiving. With that much plant in that little soil, chemistry can slam around a lot.

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Rhizome.....sometimes you scare me a little bit. :D

And Reaper....you DID sound rude. Glad you changed it. :D

Quote:

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Originally Posted by rhizome

the low biomass/media ratio makes general troubleshooting difficult. I'm thinking that more media would provide a more stable rhizosphere- a little more forgiving. With that much plant in that little soil, chemistry can slam around a lot.

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This is very very true.

Plus at those high temps, symptoms are more pronounced, and even what looks like N def could be chlorophyll breaking down because you are cooking the plants!!!

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Originally Posted by stinkyattic

This is very very true.

Plus at those high temps, symptoms are more pronounced, and even what looks like N def could be chlorophyll breaking down because you are cooking the plants!!!

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Wait....that's what I said......isn't it???? :confused::D

yes exactly, sorry WH, I'm running all over teh place and didn't read all the posts... my bad! =p

I got it RIGHT???? A SOIL THING????? :eek: :D

Hey....slow down.....cannabis isn't supposed to make you feel worse. :cool:

Well, I can't believe how much the temps dropped from installing the fan and carbon sock.

So I have got it down to 76F which make everyone very happy...

I will pick up new pots today, probably buckets of some kind and drill holes in the bottoms of course.

The media will stay the same. Potting soil .9-0-0 with vermiculite and perlite 6:1.

In order to recover from nearly murdering my ladies...should I be adding anything else to my media? I am going to flower as soon as all returns to normal and will be using Botanicare Pro Blend for flower.

Will a taste of 20-20-20 after transplanting help?

Thanks again for all the help. I't nice to know that some people really DO know what they are talking about.

Assault with a deadly weapon......hot room. :D

And hey.....once in a great while I DO (sort-of) know what i'm talking about. I just never know when. ;)

transplanted.
found buckets for $1 each and drilled some holes.
Temps have risen again, I thought it was down to 75 but now I'm at 85..grrrr

They were watered with tap water and no food...trimmed some of the dead growth and placed them back in the room. I'll leave the door open tonight to give them a break from the heat.

Thanks for the help all..

Until next time.

relax, just think how hot they might be, if outdoors ... keep a good oscillating fan over the canopy ... I would refrain from fertilizing within a few days, either way, of transplanting ... :smokin:

My plan is to wait 3 days, water, 3 days nutes, 2 days 12/12, 2 days nutes, 3 days water.

Is this too much to do before the real issue, in terms of deficiencies, is resolved?

See, if I wait and figure out the def's now, and treat them, I am treating them chemically for a vegetative state. Then I trip to flower and deal with a whole new set of chemistry to introduce.

If I move to flower do I not just have to mange the def's for the flower cycle?

I hope that makes sense. If It should be a seperate post, let me know.

Thanks again. I learn every day., and realize how much i still have to learn.

They seem to be doing much better now that they are @ 82f and holding. i moved the lights up a bit as well and that seems to be the best I'm going to get it this time of year.


I am still wondering though whether I trouble shoot for veg, or move to flower and trouble shoot then if any problems..

Can anyone shed some light on this for me.

PH is at 6 and I want to move to flower asap as they have been vegging for around 7 weeks.
I will be using Botanicare pro bloom and sweet however I don't want to move to flower if I have to fix something first.

Cheers.

anybody?? Please??

I think you are feeding too often ... you should be able to grow healthy plants, without adding much fertilizer, in decent soil ... most plants suffer from 'over-love' ... dilute your nutes to 1/2 strength, and only feed every 7-10 days ... try that next time, and see if you don't get better results ... hope that helps ... :smokin:

I will move to flower and concentrate on any problems as they arise.

I didn't want to go into flower with a nitrogen deficiency so if that doesn't seem a problem then so be it.

Thanks.