Is my light causing this?

Every plant I put under the 1k turns to shit...
It looks like a deficiency,
But it happens to every plant I put under the 1k
I have the light 3 feet away
Temps at cannopy
75°

They yellow and die off... I put this one under the light 3-5 days ago and it was lush green




Here is what they look like in a later stage
I just can't figure it out...

Cookie_rookie said:

It looks like a deficiency,
But it happens to every plant I put under the 1k

Click to expand...

Does the above mean you put some under a different light? And it didn't happen?

What soil and nutrients do you use? Do you wait completely saturate the soil (with runoff) and then let it dry until the container feels alarmingly light?

Is that little 10" box fan all you have for that space under 1000W..?

Also, they are more purple then I like to see with maybe a hint of Mg def coming on. Tell us about feeding amts, schedules and general techniques. I'm interested....

Edit: or maybe N def...need more details.

I've been givin em a light dose of the veg for a few weeks
And some of em a light dose of transition

The more healthy looking plant in my original post^^^above has only had plain phd water and very small amounts of veg

As for the fan, I'm fairly certain I have good ventalation? I have a 6in 400cfm fan pulling air through the hood out of the tent... And exhausting out the window..
Temps never go above 80°

And to answer the question about the light, I've grown nice mothers under t12 doing the exact Same as I'm doing under the 1k mh

(Pic) of plant I grew under t12
It's been frustrating me to no end
I've spent a lot on a setup and had nothing but failure

It's costing me a lot In power to keep these yellowing sickly plants going

Everywhere I read says to let 20% of what u water in to runoff and that's what I've been doing
But it seems I gotta pour a lot in to get 20% runoff

And the top of soil always seems to dry up before the bottom pots feel semi heavy an top two inches are dry

(This is the Soil I'm using)

I pulled one of the really messed up plants up to see what the roots looked like is this root bound?
Is my soil too packed?
Do I need rocks at the bottom of my pots for better draining?
I've got a new batch of clones I just started to see roots on and I'm so afraid to put em in the tent because I don't wanna keep wastin time, plants and money...

This plant I grew from bag seed
And it was green N lush
Put it in the tent with the 1k and boom yellowing up 3-4 days init only gets worse from here...

Please help

Is the 1k simply too much light ?!
I don't see how that's possible

From what I read, it looks like deficiencies and toxicities ...
I'm so confused


Another thought I had was I'm using white pots and from the looks in the above pics the roots are deffintly touching the wall of pot (I'm new so I'm not sure if that's considered root bound?) but could the light be possibly penetrating the wall of the pot since they're white? I know roots aren't supposed to have light....


Anyways I'm stressed and just rambling on prolly with bad spelling punctuation and grammar
Lol


Any help, ideas or input is awesome to me


Thanks guys...

BAAHHH...they appear to be root bound. Those pots looked bigger. Root bound plants show all kinds of odd symptoms. Any thoughts anyone else?

My brain wants to believe that's the problem but how can explain every plant coincidently gets root bound 3-4 days after goin in the tent?

To me,it looks like they need magnesium. I would dissolve 1 teaspoon Epsom salts in a gal of water and foliar feed 2-3 times to see if they bounce back.Larger pots certainly won't hurt.

Also, ask any green house worker...white pots cause algae. I see algae.

Cookie_rookie said:

The more healthy looking plant in my original post^^^above has only had plain phd water and very small amounts of veg

Click to expand...

I think that might mean something. Vermisoil is fairly nutritious at 0.8-0.5-0.3. (By comparison, MiracleGro Potting Mix is 0.21-0.11-0.16. It's use is discouraged because it's "too hot" for seedlings.). It looks like a gentler soil that isn't intended to be supplemented with fertilizer. Maybe teas.

Cookie_rookie said:

And the top of soil always seems to dry up before the bottom pots feel semi heavy an top two inches are dry

Click to expand...

What have you been doing? Waiting, or watering?

It sounds like you could add vermiculite to prevent it from drying so fast under HID. (That's the only time I would use vermiculite. I like my soil to dry fast. But, I've read HID growers use vermiculite.).

Idk I'm just confused and stressed

Thought it to be possible my roots could be getting cold?

Often times I Watered

Algae - caused by white pots and heat. Stop looking for a high tech solution. The plant in the black pot is recovering. The others...not so much.

I bet every one of those plants in the white pots have algae on the roots like the one in the photograph.

I bet your 1000 watt lamp has accelerated their growth and nutritional uptake. Plant metabolism and nutrient use can fast forward in some strains under powerful light. To me they look hungry and their shoes are too small.

Jimmy Sparkle said:

I bet your 1000 watt lamp has accelerated their growth and nutritional uptake. Plant metabolism and nutrient use can fast forward in some strains under powerful light. To me they look hungry and their shoes are too small.

Click to expand...

^^ That too.

Cookie_rookie said:

Idk I'm just confused and stressed

Thought it to be possible my roots could be getting cold?

Click to expand...

I'm with Igottag6 on the Epsom salt. You may have all the nutes you need in there, they are just locked out. Also, I think I LoveORBO was keen to notice the black pot/ white pot thing. I have heard that before, but never seen it up close and personal. I have seen roots like that before when water from the catch tray was allowed to stand, but I did not see trays in your tent. Regardless, take a deep breath, flush with Epsom salt, and give it some time, and easy on the nutes.

Are you using Distilled or r/o water?

The purple stems and leaves looks like phosphorus def.