lowryder2 sick! i can't understand what's the problem! please help!

[merlino3d]

Hi, it's my first post here. I'm writing, because my little five lowryder #2 are sicked. They start to being yellow/burned 3-4 days ago. I can't understand what is the problem. i supposed an heat stress (because the fan broked and they didn't take air for a day), but the new leafs are gonig to yellow too... starting from the points.
i hope that the pictures i've upload can help.
many thanks.

p.s. sorry for my english. i'm italian ^______^

How long has this problem been going on?
3-4 days ago

What STRAIN are you growing?
Lowryder#2 feminized

What was the establishing technique? (seed or clone?)
seed

What is the age of your plants?
18 days

How long have they been in the soil mixture they are in now?
18 days

How Tall are the plants?
2.7 inches (7 centimeters)

What PHASE (seedling, vegetative or flower) are the plants in?
they started flowering yesterday

What size pots are you using? (Include how many subjects to pot)
6,5 liters (almost 2 gallons)

What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
Growmix by Plagron

What Nutrient's are you using?
Alga Bloom (organic) from plagron (started yesterday)

How often are you feeding?
just one time for now

If flowering, when did you switch over to using Bloom nutrients?
yesterday (day 18th)

What is the pH of the "RUN-OFF"?
soli ph is around 7

What method of pH test was administered? Using Strips? pH pen?
strips

How often are you watering?
when the soli seems to need it

When was your last feeding and how often are you feeding?
i feeded them only one time yesterday (the problem started a couple of day ago)

What size bulb are you using?
400 W hps

What is your RH Factor? (Relative Humidity)
about 50%

What is the canopy temperature?
77f (25°c)

What is the Day/Night Temp? (Include fluctuation range)
77f/70f (25°c/21°C)

Tell us about your ventilation, intake exhaust and when its running and not running ?
the ventilation is good, no problem for that.

Is the fan blowing directly at plants?
not at all, because the plants are still young. but the leaf are "dancing".

Is your water HARD or SOFT?
the water is ok. i regulate the ph every time.

What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Tap

Has plant been recently pruned, cloned or pinched?
no way

Have any pest chemicals been used? If so what and when?
no way

Are plant's infected with pest's?
i don't think so! i don't see anything. neither with the macro

 

[merlino3d]

other pictures.
i hope someone can help me.
bye!!!

 

[whub]

I have popped a couple of lowryder#2's now and they both had the same thing happen at the very start. Not as bad as in your pictures though. It started right at the tips of the first leaves and stopped soon after and didnt spread. Maybe lowryders are very sensitive as seedlings ?

 

[merlino3d]

i don't know.. the leaves are becoming yellow.. i don't understand what type of def it could be...
anyone can help me?

 

[lordbudly]

its nute burn not deficiency, soil probably burned them and then you added nutes, try flushing

 

[merlino3d]

the problem came out before nutrients. could be possible that the cause was the nutrient in the soil? it's bio!
this is the description of the soli:
Grow-Mix PG is a ready-to-use potting soil blend that is completely pre-fertilised. It contains (among other things) white peat, Baltic peat, Irish white peat fragments, sphagnum, black peat, worm manure, organic fertilisers and a minimum quantity of PG mix. Premium-quality white peat mixes are used to guarantee the lightness of the medium. Comes with perlite.

someone can confirm the nuteburn?
tanks.
bye.

 

[grodog]

It does look like nute burn or salt build up....

 

[herb weedmen]

yep it is nute burn ..had some ews do the samething ..gotta stay away from those hi priced soils that have nutes already in them ..flush with twice the water as the soil it is in ..if you have gal pots then flush with atleast 2 gals of just water ..its best to keep soil grows as simple as posasible ..just the basics , sun, soil ,water and some weak nute mix every couple of weeks and only after the little round leafs fall off ..if the nutes say use a 1/2 tea spoon to a gal ,cut it in half and use a 1/4 of a tea spoon till you see how they react ...also remember nute burn almost always starts at the tips and will cause them to curl up and a ph problum would make the leafs twist or pinch and curl down ..the trouble with those soils with nutes in them is you have no way to tell if one of those little green or blue balls is going to open at each watering or a hundred of them ....flush and you should be good to go ..if not transplant in to cheap soil with no nutes in them..

good luck ..


herb weedmen

 

[merlino3d]

tanx weedman! gotta flush!
bye!

 

[merlino3d]

i flushed the soil. in your opinion, how much damages this nuteburn will cause to my harvest? the nuteburn hit the quality or the final amount? or both?
tanx
bye!

 

[tree&leaf]

It's burn, but probably not nutrient burn, it's probably caused by an incorrect watering method. Those are pretty big pots for those size of plants, you really ought to consider starting them in smaller pots and potting them up as the root ball grows. Larger root ball = larger yield.

Are you watering the whole pot, or just the part where the plant is? Because if you are doing that, it's almost certainly going to be a watering problem. Also nutrient burn doesn't really look like that, it doesn't just affect the outer edges of the leaf, but normally across the whole leaf and in a dark brown burnt colour, not cripsy and tan like those. Tan cripsy edges to leaves normally indicates excessive water evaporation from the edge of the leaf which is often caused by either a lack of water or incorrect watering leading to a lack of water.

You also shouldn't be feeding anything at that stage in the plants life. Yes, it's entered flowering, but Lowryder is an auto-flowering strain and will therefore flower automatically, those size pots shouldprovide sufficient nutrients (as long as they're watered correctly) for at least 4-5 weeks before any liquid feeding is required.

Flushing probably wasn't the thing to do, but at least they will have had a good watering now. Try and understand the importance of watering plants correctly, there's some information in my previous posts.

 

[merlino3d]

hi
i watered the whole pot everytime the soil seems to need. i think it's a nuteburn. the soil in the pot has nutrient for three week (ended today), and probably a baby plant can't afford all that nutrient soil. infact, for a space matter, one plant was in a small pot and it dosen't have the problem of the plant in the big pot.
in any case (nuteburn or not) i hope that flushing help the plants to recover.
if the new leaf'll come out without problems, i'll fertilize again.
do you think it's correct?
tanx
bye!

 

[tree&leaf]

if the new leaf'll come out without problems, i'll fertilize again. do you think it's correct?

Considering that you've ignored everything I've told you and bascially told me I'm wrong, despite the fact that I'm vastly more experienced than you are, and know from experience that 90% of problems with new growers come from them not understanding how to water their plants correcty, I think you need to do whatever you want to do.

 

[Botanist]

Damn miracle grow! lol
Don't touch it! Just let it be and it will be fine. Try not to use crazy soil next time. The more you mess with it the less likely its gonna be ok. It don't seem to bad. Let the plant adapt and then you should do the same by using a different soil next time. Live and learn. It has happened to me but it all turned out ok.

 

[Botanist]

Cut the bad leaf off.

 

[merlino3d]

@leaf&tree...don't blame me! i'm here to learn, but when ten people (i posted in another forums too) tell me that is a nuteburn, and the plant that recived less nut than the other is ok... well... i think it's a nuteburn. seems logic to me. i posted to be helped.. i'm sure u r a litte Cervantes, but why i gotta trust you and not the other ten people?

@Botanist... tanx a lot for the help. do you think i can cut the bad leafs now? the plants are 20 days old... i'm scared to hurt them ^____^
no doubt next time i'll change soil.

bye.

 

[tree&leaf]

@leaf&tree...don't blame me! i'm here to learn

Then learn from people. Telling people who are far more knowledgeable than you are they're wrong isn't going to help you to learn.

but when ten people (i posted in another forums too) tell me that is a nuteburn

I don't take the slightest bit of notice of what most other people say because quite frequently they're wrong. Most people wouldn't know the difference between nutrient burn and a slap round the face with a wet fish. You can see that from the countless times any and all problems are diagosed as either 'nutrient burn' or 'ph problems', when they're invariably down to the basics not being done correctly. Basics like correct soil preparation, correct soil amendements, correct size pots for the size of plant and correct watering.

Those are the basics and you MUST get them right, otherwise you'll have problems. Getting these basics right is FAR more important that worrying about feeding them nutrients, because plants will TELL you when they need nutrients.

and the plant that recived less nut than the other is ok

Less nutrients? Did you not say this originally -

When was your last feeding and how often are you feeding? i feeded them only one time yesterday (the problem started a couple of day ago)

So the problem started BEFORE you started feeding them? How can the problem be excess nutrients then? If the soil was too rich in nutrients why wasn't the other plant affected? Assuming of course you used the same soil for both?

Can you see, that from what you and everyone else is saying doesn't make any sense? If the problem began BEFORE you started feeding them, how can that be the cause?

I rarely post here any more for this very reason, I get tired of seeing poor and wrong advice being dispensed by people who don't know any better themselves. They think they help, but invariably end up giving people bad information, bad advice and causing even more problems than they solve.

So by following bad advice, you've flushed your soil and in doing so leeched a load of nutrients out of it meaning you'll have to start feeding far earlier than you should, that is if the plant survives that long.

 

[merlino3d]

@leaf
i don't know you and i don't know the other people who answered me. so, why i have to trust you and not the others?
i feeded one time, but the soil burned the plants! so the plant in the small pot (with less soil) recived less nut. that's all. otherwise i don't understand why only one plant didn't show burn, in the same condition.
u can be right, but the fact is that my plant, after flushing are growing and going better day by day.
bye!

 

[tree&leaf]

so, why i have to trust you and not the others?

Well therein lies the problem. At the moment you're so clueless you have no idea when you're being given good advice. I've now spent some time trying to educate you and you're still not listening or learning!

i feeded one time, but the soil burned the plants!

How do you know that? Because someone told you? You haven't got the slightest clue have you? You're just guessing, nothing more. One nutrient feeding IS NOT ENOUGH to burn the plant!

so the plant in the small pot (with less soil) recived less nut. that's all.

And it's your pot sizes (as I said in my first posting) that are causing the problem! Larger pots need more water, but you're probably giving them both the same aren't you?

I have plants 3 times the size of yours in half the size pots and I only water them once a week, how often are you watering? Whe nthey need it? That's the problem YOU DONT KNOW when they need watering!

otherwise i don't understand why only one plant didn't show burn, in the same condition.

I've already explained to you why, but you're not listening!!!!!!!

If you're not watering that large pot properly, you're leaving dry areas in it. You have no idea where the roots are, and they're probably hitting those dry pockets of soil. So whilst you 'think' there's enough water in there - there isn't.

u can be right, but the fact is that my plant, after flushing are growing and going better day by day.

Well it will do as I said, because you've fully saturated the pot, which had you done so from the beginning would have prevented the problem.

Your problem was caused by poor watering, however if you want to continue to beleive it was nutrient burn and don't want to learn that's up to you.

I'm done.

 

[merlino3d]

so, u think that all the people wrote in this post are dumb... O____O
anyway... i watered the whole pot (big pot and small one), and only when the first 2cm of the soil was dry. exactly what experts say in all indoor coltivation manuals. but if u r better than Cervantes... c'mon, show me the way!
for the last time... the nut was in the soil!!! that was the problem.

bye!