Help from PRO'S needed!

[Makaveli]

Hello,

I have been growing Purple Haze, White Widow & Durban Poison. Flowering day 23.

What I've done so far:
-I gave nitrogen 1 week ago which didn't help anything. 6.2.2008
-I flushed the plants last thursday which helped some. 7.2.2008
-Gave magnesium last sunday, didn't help or even made it worse. 10.2.2008

So now I need your help guys, check my growing here and give your opinions.

Last update of the problem.
http://www.icmag.com/ic/showpost.php?p=1514121&postcount=23'

Whole Diary
http://www.icmag.com/ic/showthread.php?p=1486385#post1486385


SOIL:
What STRAIN are you growing?
Purple Haze, Durban Poison and White Widow (Durban has little problems, basically this is about the Purple Haze. Nothing wrong with White Widow)

What was the establishing technique? (seed or clone?)
Feminized Seeds & Durban was a clone.

What is the age of your plants?
23days flowering (43 days 12/12) but whole age is 53 days. Started counting from vegetative phase.

How Tall are the plants?
Purples are around 120centimeters, Durban is around 150cm but it's scropped

What PHASE (seedling, vegetative or flower) are the plants in?
23days flower

What Technique are you using? (SOG, SCROG etc)
Normal growing, Durban is Scropped

What size pots are you using? (Include how many subjects to pot)
11 L per plant

What Nutrient's are you using?How much of each with how much water? How Often? *Knowing the brand is very helpful*
Bio Bizz, following the feeding schedule

What is the pH of the "RUN-OFF"?
Not checked

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

How often are you watering?
I was watering 2 times a week, 1L per plant and other watering day is for nutrients, now I am watering 2 times and 1 time for nutrients.

When was your last feeding and how often are you feeding?
Once a week, last time was sunday, but I only gave Mg. Last full dose was week ago.

What size bulb are you using?
600w HPS

What is the distance to the canopy?
20-40cm, depends of the top

What is your RH Factor? (Relative Humidity)
If you mean how much is humidity, it's around 50-55% all the time.

What is the canopy temperature?
23-25

What is the Day/Night Temp? (Include fluctuation range)
23-25 / 18-20

What is the current Air Flow? (cfm etc.)
UFO, 340 cbm/h

Is the fan blowing directly at plants?
No fans used anymore

Is the grow substrate constantly wet or moist?
no

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

Has plant been recently pruned, cloned or pinched?
nope, not at all

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

Are plant's infected with pest's?
no


Thank You all ready!

 

[sirgrassalot]

Looks like Boron deficiency tough to see with the yellow pictures. How close to the lights are they burning them?

 

[Makaveli]

Looks like Boron deficiency tough to see with the yellow pictures. How close to the lights are they burning them?

Boron, hmm which nutrient I should give. Natrium? Or shall I start playing with PH now?

Lights ain't problem, I got cooltube + UFO + Active Carbon Filter, the heat of the tube is around 24 or so. Plants are around 20-40cm away from the tube, the tube is basically just little warm, not even close to hot which would burn the plants.

And anyhow this "burning" isn't from heat, it's from nutrient deficiency or opposite.

If you want to investigate my whole situation, you could check my whole diary. Well anyway, this is a bit older picture but it's the same problem anyway.



PS. I should give nutrients tomorrow and I cannot adjust PH before weekend because I'm out of liquids. Should I give full dose or what I should do?

Thank you, Makaveli

 

[sirgrassalot]

They look burnt way back on your diary pg.1 Damn they've gone through a lot lately. That may not be boron even though it mimics it in the picture. Go to the guide
http://www.icmag.com/ic/showthread.php?t=11688
& see if it fits the bill if not my advice would be a flush with 25% bloom ferts. So after you flush with plain water use 25% of bloom ferts leaving the plants with some nutrients to survive.

 

[Makaveli]

They look burnt way back on your diary pg.1 Damn they've gone through a lot lately. That may not be boron even though it mimics it in the picture. Go to the guide
http://www.icmag.com/ic/showthread.php?t=11688
& see if it fits the bill if not my advice would be a flush with 25% bloom ferts. So after you flush with plain water use 25% of bloom ferts leaving the plants with some nutrients to survive.

In my opinion there is no other choice then the Boron. Cause only ones which fit to this case are Boron or Mg and mg is tried all ready.

I think I'll go for this: I'll flush em again, with good PH tested water and give those 25% bloom nutrients.

Yea the Durban looks like it's burning from the light, but basically it's just yellowing. I also scropped the durban because of that (since some sativas don't like to be so close to lamp and may yellow bec of that.) and flushed etc. Flushing helped to the yellowing a lot, like 90% of it was gone and it had it color back. But now the leaftips are starting to burn, dry up & yellow again. But anyway, I think I'll survive from this.

Question: Because I don't have PH waters etc.. now, what I should do? Should I give only water tomorrow or give some nutrients as well, because I can do the flushing etc at weekend. Or should I just flush it with tap water tomorrow and do the nutrients, or wait until I get the PH liquids?

 

[DIGITALHIPPY]

looks like PH flux to me, could cause boron def. ive had that b4.
your durban


looks like my og when i had a ph flux issue.



id flush with RO water and use 25% bloom like sirgrassalot said.

quit using tap and buy some gallons of distilled/drinking/purified water (r.o)

 

[sirgrassalot]

If it's time for watering (tomorrow/today) I would do the flush with 25% & not wait. I think the maximum damage has been done if you don't add to the problem....


Yes, Digital that's a dead ringer you have there. It has 3 stages of colouring.

 

[Makaveli]

If it's time for watering (tomorrow/today) I would do the flush with 25% & not wait. I think the maximum damage has been done if you don't add to the problem....


Yes, Digital that's a dead ringer you have there. It has 3 stages of colouring.

So I'll go buy some R.O water from store tomorrow, flush. And then give 25% bloom / L for each plant, which would be 1ml / L. Or do I mix the bloom with the R.O water, and basically flush it with nutrients on the water?

 

[sirgrassalot]

Totally flush with the store bought water let sit 1/2 hour so it drains as much as possible than water & the end with 25% mixed in water so all that's there is the 25%

Funny we need to have these at the brink of being overfed to maximize production, it's a fine line.

 

[MynameStitch]

THat looks like an iron deficiency, the last pic you posted digital.

Makaveil, the problem does look like a boron problem...... but it can also be masked by a pH problem, is the problem on the top part of the plant?
How much fresh air and temps do you got going in your grow room?
The skinny leaves like that show there may not be enough air in your grow room, fresh air circulating around......

What is the pH of the "RUN-OFF"?
Not checked

Since you have not checked the run off, that could also be the problem.
Another problem I see, the one with the brown spotting is that coming from the tallest plant?

20 cm is 7 in away, that is VERY close to the plant for a 600 watt hps.....

 

[Makaveli]

THat looks like an iron deficiency, the last pic you posted digital.

Makaveil, the problem does look like a boron problem...... but it can also be masked by a pH problem, is the problem on the top part of the plant?
How much fresh air and temps do you got going in your grow room?
The skinny leaves like that show there may not be enough air in your grow room, fresh air circulating around......



Since you have not checked the run off, that could also be the problem.
Another problem I see, the one with the brown spotting is that coming from the tallest plant?

20 cm is 7 in away, that is VERY close to the plant for a 600 watt hps.....

Yea the tallest TOP of purple haze is like 20cm away, other tops are 40cm and the main top is healthy no problems there. And fresh air is not a problem, you basically cannot get more fresh air then my grow room gets.

There is big and powerful fan on the bottom of the wardrobe. Which delivers fresh air to the wardrobe. It looks small, but I can guarantee that it is really powerful. 230V.


And then there is the cooltube + ufo + carbon filter set. Which delivers the hot / old air out of the wardrobe. And basically there is little under pressure all the time because the UFO is so powerful.



I can bet after conclusions and thinking about it, that this is about PH. But anyway, I'll come back to you at my grow diary so, keep an eye out! And thx A LOT guys for helping me, respect!

Edit: One more question, when shall I start giving the nutrient doses again? Next week?

 

[MynameStitch]

Having the light that close is going to cause some problems, I bet some of that browning has to do with dry heat having to damage some of the leaves too.

If it was a pH problem your plant would be affected else where too, not just the tops. Though it is very important you must check and keep your pH in check, but I think I would get that light up if you can, cause that is very close to where it is in the red line of causing problems.

 

[Makaveli]

Ok,

PH from my tap water is tested, it was 7-8 (I used ribbon) and I also flushed the plants with spring water which PH was 5-6 (perfect). White Widows I didn't flush, just gave em the normal dose of nutrients, but I think I'll flush em as well at weekend when I get some PH down liquid. Anyway, thx guys for helping, I'll keep you updated at my diary.

 

[MynameStitch]

Also please move the light up a little more, the plant will start showing worse problems if you don't.
You used a ribbon? What kind of ribbon are you talking about?

 

[sirgrassalot]

What kind of ribbon are you talking about...Litmus paper, comes in a roll?

 

[HeadyPete]

You have to check runoff ph to tell you the ph of your media. PHing the water/nutes to ideal will not get your soil in range if it is out. You need to adjust water/nutes to counteract soil ph.

If you feed ph 6 water/nutes and your runoff comes out 5.2, your next watering should be raised to 7.1 to get your media up to 6.3. It will take a few waterings to get the soil ph up and you don't have to ph the water so much as soil gets closer to ideal.

 

[Makaveli]

What kind of ribbon are you talking about...Litmus paper, comes in a roll?

Exactly.

I scropped durban totally and also put the lamp so high as possible. Also changed a bit spots there. I am keeping you up to date at my diary.