My plant needs a doctor, she's sick!

[generalgrowth]

Hey all you on icmag, first of all i apoligize for my bad English. Hopefully you will understand me anyway!

The strain is: Mandala 8 miles high
Height: 100 cm
pots: 11L
Soil: Good quality potting soil
Bulb + reflector: 600w HPS, adjust a wing w super spreader
Temp: 28-29 degress Celcius
RH: 32%
Bloom: yes 29 days in bloom. (4weeks)
water: soft tap water, 110 PPM
PH: 6,3


Until 2 weeks ago, everything went very smoth, I didn't add any nutrients only plain tap-water when the pot felt light-weight and the soil was quite dry. But then it started to happen things, this picture #1 is from last sunday, as you can see the lower fan leaves have started to yellowing. And in the mid regions, she have some rusty spots, as seen on picture #2 and #3, from last sunday too. My first guess was that it's Magnesium defency, so I bought magnesium at my pharmacy sprayed the leaves, aswell as I started to feed them with Nutrients. I use the complete set from HESI for soil, and I follow their schedule, full amount of Phosphorius and bloom complex at every watering, that is every 48 hours. 3.5 Litres at time.

This thursday, the mid region Fan leaves looks a little bit worse, but it seemed like no other leaves had been "infected" as you can see i the Picture #4 and #5 from this thursday. Iam still watering full scheduale with HESI nutrients And this is whee Iam getting kind of worried. More of my older fan leaves, and mid age fan leaves are getting this small small dots in orange/copper color. But it's isolated to the fan leaves, not on the leaves on the buds. This picture #6, is 1 hour old, and shows this small dots, not all of them, my camera didn't capture them all, but they go all the way to the leaf-stem. It's light-green around the dots. I was afraid that I'am burning her with nutes, so I gave her a flush today.

Now I need your professional helf to determ whats wrong with my girl!

Picture #1

Picture #2

Picture #3

Picture #4

Picture #5

<picture #6

 

[generalgrowth]

How long has this problem been going on? Aprox. 2 weeks
What STRAIN are you growing? Mandala 8 miles high
What was the establishing technique? (seed or clone?) Seed
What is the age of your plants? Aprox 10 week
How long have they been in the soil mixture they are in now? 4 weeks, but I have soil from day 1 in the pot also, I just added more soil when changed to larger pots, did'nt throw away any old soil
How Tall are the plants? 1m / 100cm
What PHASE (seedling, vegetative or flower) are the plants in? flower
What Technique are you using? (SOG, SCROG etc) LST
What size pots are you using? (Include how many subjects to pot) 11L
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) Hasselfors garden P-jord, no additives such as perlite
What Nutrient's are you using? HESI complete set
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* 50ml bloom complex, 25ml Phosphorius per 10L water
How often are you feeding? every second day, 3.5L
If flowering, when did you switch over to using Bloom nutrients? at 12/12
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"? 6.3 last sunday
What method of pH test was administered? Using Strips? pH pen? PH-pen
How often are you watering?Every second day
When was your last feeding and how often are you feeding? Yesterday, every second day, at every watering
What size bulb are you using? 600w
What is the distance to the canopy? distance to bulb? Then its 30cm
What is your RH Factor? (Relative Humidity) 32%
What is the canopy temperature? don't what this is
What is the Day/Night Temp? (Include fluctuation range) day: 28-29, night 22-23 Celcius
What is the current Air Flow? (cfm etc.) N/a
Tell us about your ventilation, intake exhaust and when its running and not running ? 24/7, 125mm exhaust fan 350 m3/h running at half speed
Is the fan blowing directly at plants? not this fan, another fan is
Is the grow substrate constantly wet or moist? not constantly, I try to keep it moist
Is your water HARD or SOFT? Soft, 110 PPM
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? Tap water
Are you using water from a water softener? no
Has plant been recently pruned, cloned or pinched? no
Have any pest chemicals been used? If so what and when? no
Are plant's infected with pest's? Not what I know

 

[mongreloctopus]

i'm not familiar with the specifics of that nutrient but it looks like calcium deficiency. i'm guessing the bloom nutrients focus on P/K, so it's likely all of your foliage will eventually turn yellow.

 

[generalgrowth]

i'm not familiar with the specifics of that nutrient but it looks like calcium deficiency. i'm guessing the bloom nutrients focus on P/K, so it's likely all of your foliage will eventually turn yellow.

I think you are correct about Calcium, the article i read about sick plants in my foreign languege told me different from what i read in the thread here on ICMAG. However this symptoms is spreading to younger leafs also, not the youngest yet, but younger and younger slowly. The don't yellow at first, it's the rusty spots that appear on healty leafs.

Anyway, the nutrient Iam using is HESI and contains following:

Hesi Bloom Complex NPK 4+3+5
It also contain Magnesium, Calcium, Sulfat, Molybden and some other micro nutrients such as, Mangan, Zink, Copper, Boron, Kobolt, Vitamin B1, B2, B6

I use 50ml per 10L water, I water 3,5L every second day.

Hesi Phosphorius-Plus NPK 0+8+4
I use 25ml per 10L water in my ntrient mix

I checked my PH just minutes ago and my watering PH is 6.3 aswell as my Run-off water is 6.3 on a new calibrated PH-pen, this should't be so bad right?

Please help me identify the source to my problem, I hardly can sleep at night beacause my darling is sick! And again I apologize for my bad English!

 

[DocLeaf]

Those are just the lower most fan leaves fading,, as a plant establishes itself they get shaded and wither away.

We like to remove any faded leaf ,, it may help reduces issues of diseases and mold later.

Otherwise the upper parts of the plant look healthy

Hope this helps

 

[Quick]

IMO, you should make sure the plant is getting adequate nutrition for it's stage of growth (not having it will allow plants to develop problems easier),
and treat them for potential 'rust'.
Make sure they are not close to being rootbound, as problems can tend to rise in many strains in this situation, if they are, transplant them,
that looks like a big plant for that size container.
Your pH should be accurate and stable at all times, adding some extra garden lime to your medium when you plant will help....

Sulfur dust powder is a great treatment for rust, blackspot, mildew and even some mites (added to water and sprayed foliarly) and doesn't harm the plant, don't confuse this with burning sulfur, that's different, the powder is about $10 at Home Depot.

 

[Throwgar]

I'll second the root bound diagnosis. You need about a gallon of soil for each foot of plant.

 

[generalgrowth]

Okay! I thought 11L would be just fine for 5 weeks veg and 9 weeks flowering.

Is it okay to transplant a rootbounded plant in 4 week of flowering into new bigger container?
What I've heard that leads to alot of stress wich could lead to hermaphrodism?


A gallen of soil per feet, how much is that in the metric system? What container size do you recomend?

 

[generalgrowth]

Okay, I think you guys are right about the rootboundness, today I took her out from the container and she looked as seen on Picture #1 and #2, Also the symptoms are not stopping, every day it spreads slowly as seen on picture #3 and #4. She don't stretch any more, bud the buds gets bigger

In this situation, is there anything to do? Will she survive til harvest? ( aprox 5 weeks left)
She is in week 4 of flowering, and my guess is that she stopped developing roots at this time, so a transplant and cutting roots will not help me right?

Thanks to all of you who taking time to answer my questions.
Best regards!

Picture #2

Picture #3

Picture #4

 

[Mr. Greengenes]

Yes, transplant! Better late than never. Into a slightly larger pot will do. Some new roots will grow but not lots. NO, do not prune roots, don't disturb them at all (less than you already did when you popped it out) if possible. Like Docleaf says, theres lots of healthy green leaves up top, losing a few down low won't be a problem. Dense plants with short internodes often shed a few lower leaves a few weeks into flowering.

 

[Throwgar]

You don't need to root prune of you're going to a bigger pot. 1 gallon per foot = 4 liters per foot. Is that really an 11 liter pot? It looks more like 4 liters. Anyway, they make a tool called a root comb. You can gently comb out the roots on the outside before transplanting. If you don't have a root comb, just give the root ball a nice gentle scalp massage begore transplanting.