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Old 03-18-2009, 04:03 PM
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Unhappy Bent Seedling Stem...Please Help Diagnose!
Hi, I was wondering if some of you more experienced growers could help me diagnose whats wrong with this single feminized white widow seedling.

The seedling is exactly 5 days old...the seed was places into moistened rock wool at a pH of approximately 5.5. The solution used to wet the rock wool consisted of 500 ml distilled water with one drop of superthrive.

It was basically kept in a humidity dome with the lid on and on a heated mat in total darkness for the first 48 hrs and when the cotyledon breached the surface the mat and and cover was removed and the seedling was placed about 10 inches bellow a 42 Watt 2600 lumen 6500K CFL. The temperature is around 25 deg C (77F) at the surface of the rock wool. I felt with my hard the temperature at leaf level and it seemed fine and bare noticeable heat wise.

When the seedling was moved under the light a 1/4 strength nutrient regime was started using DNF early growth A,B formula again with a drop or two of superthrive mixed in. The seedling stands at about 1.5 inch at 5 days old.

Everything was going great until this morning when it was discovered the seedling stem was bent sort of like it was trying to avoid the light but can understand why that would happen.

Does it look ok? Does anyone have any suggestions as to whats going on or whether i should be concerned. BTW there seems to have been no new visible growth the last 24 hrs.

Please help as the is the only seed available to this individual...loosing this seedling would suck big time.
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Old 03-18-2009, 04:28 PM
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I never heard of dnf, is it for seedlings? If not stop useing it and flush. then let the soil get some air.
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Old 03-18-2009, 04:38 PM
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as long as it isnt completely severed a plant will grow. that bending isnt uncommon in plants, it is fine. what temp is that room? and alot of people say not to give them nuted until they are about 3-4 weeks old
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Old 03-18-2009, 05:04 PM
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The temp is around 25dec C (77F). DNF is dutch nutrient formula for vegetative growth. I used 1/4 stength. The rock wool isn't soaked it's just slightly moist so i'm sure its getting enough air.

The seedling is in rock wool...it should receive some nutes shouldn't it? or else how could it survive beyond germination? So the seedling doesn't look that sick? I have no experience so I wouldn't know. Thnx for your input
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Old 03-18-2009, 05:10 PM
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i dont think its sick at all. i have seen them fall over onto the ground then grow up while still bent to the ground
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Old 03-18-2009, 05:11 PM
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Its common. some plants just don't know which way is up. Kind of like a few people I know.............
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Old 03-18-2009, 05:12 PM
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Yeah you never want to give them nutes before at least 3 weeks, even tiny doses.
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Old 03-18-2009, 05:21 PM
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Quote:
Originally Posted by GoldenGanja13 View Post
Yeah you never want to give them nutes before at least 3 weeks, even tiny doses.
That's not true if you are going to grow this hydro and keep it in rockwool cubes all it's life.

I start them with 50ppm of nutes during the germination. And from there it goes up. I wouldn't have used 1/4 strength that's for sure. 50ppm would be about 12th strength.

They will need a little something something to stay healthy. I would say leave them at 10th - 12th strength for about 2-3 weeks. Once it has a few leaf sets and isn't really a "seedling" anymore, I would then start upping the nutes slowly.

The thing to remember with nutes is that less is more. The plant really will get by with very little nutes and you are more likely to do damage than good by feeding aggressively.

Looking good though, and I wouldnt' worry much about the bending, but I would flush those cubes again with ph 5.5 water and lay off the nutes for a couple of days. Then water with 10th strength nutes and you will probably only be watering once a day if that for the first week or two.

Good luck, and welcome to the wonderful world of growing marijuana.
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Old 03-18-2009, 05:25 PM
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My Bad, I am soil 100% don't care for hydro, never think about how the other half works.
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Old 03-18-2009, 05:29 PM
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Quote:
Originally Posted by GoldenGanja13 View Post
My Bad, I am soil 100% don't care for hydro, never think about how the other half works.
I am curious why you have chosen to be 100% soil? I have been fighting with this for a little while. Some of the best plants I've seen out there have been soil, but I can really only say that the biggest have been soil.

Is it a matter of size that makes people want to stick with soil? It seems like I can just get better "plant density" with hydro, but I am willing to grow some in soil if there's some kind of benefits to it.
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