Help! Sick Plants!

[Roots23]

Hi everyone,
I'm growing some plants under a 400W agro hps in a closet,that is always open,in a room with the window open 24h.I've got no extraction but I think there is a good air exchange.there is a fan in front of the plants too.Temperature is 25/26°C when the lamp is on and 18/19°C when off...don't know the umidity%.Soil.
Day 25 of veg 18/6...some plants look like had an overfert,others a deficency...maybe an overwatering...?!?
Can anybody help me...what do you think?!?

 

[Roots23]

sick plants

sick plants


my sick plants..

 

[Roots23]

sick plants

sick plants

 

[Roots23]

they are 5 Pineapple Chunch from Barney's Farm,5 The Ultimate from Dutch Passion and 1 CRplus(Critical Mass per AK47) from Blim Burn seeds...day 25 of veg...the 2 Ultimate in the middle are 3 days younger.only the CR and 2 PC look good...help me please!

 

[Roots23]

while nobody answering I changed pot size,cutted the sick leaves and gave 'em just water for the last two times...after three days look all going better...I'll wait other few days to see how they are really going...hope well...

 

[MynameStitch]

come back and let us know how they are doing ,if ya still need help I can help ya out.

 

[Roots23]

Hi MynameStitch...thnk you for answering...
these are the plants 2 days after the cuts,flush ecc. they still having some problems...what do you think about 'em?!?...they are of course better but looks they still got some deficiency(micro-elements?)...I'm givin'em Plagron Alga Grow(3ml/l now)...wait for your answer...thanx!

 

[Roots23]

...I don't think it's just a N deficiency...Help!Thank you!

 

[BrownThumb]

I would guess N, though you think there is more to it than that. From your pictures, I see the petioles near the tops look green and healthy and the lower leaves that have a def. in some pictures have purple petioles. That suggests to me that you already solved that issue. Then you have what looks like nut. burn in another picture, which is sometimes caused by splashing food on the leaves (I have done this and still do when I am not careful). In both cases, I say you're OK now unless you start to see the symptoms return.

 

[such_a_famine]

looks like nitrogen, calcium, magnesium def all at once. I would just increase the concentration (ppm/EC) of the solution!

 

[Roots23]

I was thinking at a combo of defs too...can it be 'cause the Plagron Alga Grow has not micro elements?!...today I'll feed 'em again...hope well!thanks,I'll post new photos soon!

 

[BrownThumb]

This is a little interesting, though you may think I am a nut-job. There are some micro-nutrients in Urine, so if you're ever in a pinch, pee on'em.

 

[Hydro-Soil]

Your plants are eating the nutes out of their lower leaves to support new growth. They're hungry.

Up the feed.

Stay Safe!

 

[Bluewidow]

This is a little interesting, though you may think I am a nut-job. There are some micro-nutrients in Urine, so if you're ever in a pinch, pee on'em.

Causes more harm than good, it will kill off good bacteria at the same time.

 

[Roots23]

I don't think i'm going to use my urine for feed the plants...I know a product that should work good for these cases.
for the moment I'll try to feed 'em a bit more and see what happens...tomorrow I will post some new pics...
thank you for your answers...

 

[RetroGrow]

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...I don't think it's just a N deficiency...Help!Thank you!

Classic Broad Mite symptoms, I am willing to bet.
Here are some pictures from my gallery of seedlings with same symptoms:

First thing you need to do: Treat with aspirin. You do this by adding 325 Mg. plain generic aspirin dissolved in your nutrient solution/water, and feed your plants with this mix. You will see improvement overnight, regardless of cause. Plants will perk right back up.
Next: get a microscope. If you don't have a good one, get a cheap one from Radio shack or Amazon for $10. You must examine the underside of the leaves and look for eggs. They are not visible with the naked eye. Must be a 100X scope or more. Pull off some of the worst looking leaves and examine them. I'm quite sure you will find eggs, and probably mites, although the mites are difficult to see as they are translucent and hide from light. Eggs are plainly visible though. Google broad mite eggs to see pictures of what they look like. Once you have confirmed broad mites with a scope, go to the Broad mite thread, and begin reading at about page 40.
There are several ways to deal with these. There are poisons, to treat them (Avid, Forbid, although Avid doesn't kill eggs). These poisons are pretty nasty and require hazmat gear to spray and a respirator. Do not get on skin, in eyes, or breathe in the particles. Extremely nasty.
Another option is predator mites, mites which eat broad/cyclamen mites & their eggs. These are available online, but can get expensive.
The third method is heat treatment. This is my preferred method, as no toxins are involved, and mites & eggs are killed. It involves heating room up to 120 degrees F for an hour or hour and a half. This will kill mites without using poison. You do this by leaving your lights on and turning off A/C and ventilation, then measuring temperatures in the space. Add electric space heaters as needed (Home Depot) to get the temperature to 120 F. Do not get heaters that have thermostats that shut heater off @ certain temperature.
Regardless of which method you choose, you will have to repeat, because if broad mites are on your plants, they are also in your house/yard, and will come back, so repeat treatments are mandatory. Go to the Broad mite thread and read.
But first do the aspirin, and you will see an immediate improvement, within 12 hours, as aspirin boosts plant's immune system and fights off the toxins injected by the broad mites. Then you can continue with further treatment after confirming with scope. Don't wait to confirm with scope before using aspirin. Aspirin will help regardless of what's wrong, and the results are visible fast.
Good luck,
RG

 

[Roots23]

I had broad mites in the past and I am not sure if this is the problem(I'm still thinking at a defs combo)...however tomorrow I'll treat 'em with aspirin and I will do an heat treatment...do you think it can be enough for now?!?
thanks!!!

 

[RetroGrow]

I had broad mites in the past and I am not sure if this is the problem(I'm still thinking at a defs combo)...however tomorrow I'll treat 'em with aspirin and I will do an heat treatment...do you think it can be enough for now?!?
thanks!!!

You must check with a scope to confirm. If you had them in the past, they are back. They never go away. I'm pretty sure it's broad mites. Mimics potassium deficiency, and if you had them before in same location, it's them for sure. Get a scope and check underside of a couple of leaves for eggs. You need a 100X scope. $10 @ Radio shack, or Amazon, or Dealextreme.

 

[Adriank]

do this while checking for bugs-- Do another flush of growing media-- Add back appropriate newts-- include a roots excelerator, for example House and Garden roots excelerator works great-- try foliar feeding for a couple of weeks-- these steps will give your plant a chance to re-coup its growth while you are checking for bugs--

 

[Roots23]

Aspirin worked great...plants look healty,I increased the concentration of the nutrient solution...now they are better...I'm still thinking that there are no broad mites...they are growing good...soon some pics...thanks!