COCO CFL groe problems

[m4Rko]

hi all.

im a new grower and i hit some problems.
all fan leaves on my two darlings (top 44) are turning tro yellow and the points are like burned.
-the temp is 29degrees celsius
-those were clones
-im feed them once with HESI coco NPK 24-21-27
+HESI supervit1 drop to 4.5l of water
-im using regular tap water
-just flushed them yesterday with tap water and seems that this made the problem worse

is it nutrients deficiency?
they are now 1 week under 200W cfl












THANKS 4 ANY HELP, COZ IM LOOSING MY MIND OWER THIS

 

[3dDream]

What is your ph? Are you keeping the coco wet?

Coco needs to be kept wet and you will need to give them food every watering.

 

[mitsu1]

You'll need some PPM/EC and PH readings to see whats going on. Compare what your putting in,PH and EC, to what is coming out. Get those measurements and you can tell if the PH is off or if your over or under feeding them. My guess without the numbers would be underfed....mitsu

 

[HeadyPete]

you don't need to feed coco every watering...but the frequent the waterings, the better.

Please fill out the infirmary form

 

[3dDream]

HeadyPete - I prefer low feedings every watering. I wouldn't want to give the idea that coco should be fed like soil, because it shouldn't.

 

[m4Rko]

hey im getting a ph meter this week so ill will know more about it.

thx for the fast replies

 

[m4Rko]

here is the whole thing

HYDROPONICS/Aero Ponics/Coco/Soiless/

How long has this problem been going on? 5 days
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents) no
What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...) handwatrering
What STRAIN are you growing? top 44
What was the establishing technique? (Were the seed or clone?)clone
What is the age of your plants?
How long have they been in there mixture they are in now?(coco,soiless etc..) 8days
How tall are the plants? 12cm
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in? veg
What Technique are you using? its gonna be scrog
What substrate/medium are you using?(Hydroton, RockWool etc.)coco
What is the Water temperature?
What color are your roots? White? Brown? Are your roots slimy?
What Nutrient's are you using?(If growing soiless)HESI coco NPK 24-21-27
How much of each nutrient are you using with how much water?1ml/l *Knowing the brand is very helpful*
How often are you feeding? (If using soiless) only fed them once
How often are you giving nutrients? (If using soiless)
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM you are using?
What is the pH of the "Tank"? 6.9
Are you sure your calibration is correct on your equiptment?
When was your last watering? one day ago
What is your water temps?
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients?
What size bulb are you using? 200W cfl
What is the distance to the canopy? 10cm
What is your RH Factor(Relative Humidity)?
What is the canopy temperature?
What is the Day/Night Temp? (Include flucutaion range) 26-30
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ? pc fan always on
Is the fan blowing directly at plants? yes
Is your water HARD or SOFT?
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?
Has plant been recently pruned, cloned off of or pinched
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's

i managed to get that ph meter and ph down so now i have a ph of 6.0 (water + nutrients)

i also use HESI supervit 1 drop to 4.5l of water
i really hope that this is gonna work, and i can post u some pics about this grow.

thx

 

[HeadyPete]

Well that ph needs to come down to around 5.8 - but do it slowly and gradually over many days and waterings...

Stop adding food. What dose did you feed that Hesi coco? That is super strong stuff with those high numbers, you need to go real easy.

Just give plain water for a few days until you see nice green growth starting, then use half of what you fed before.

I would stop the Super Vit until they recover.

200 watts of CFLs is not a very strong or focused light source, so the plants need less food.

3rd Dream - I agree, not soil. Some prefer low daily feeds and some feed every 2nd watering. I water every 2 days and feed every 2nd watering but if I increased waterings then my plants would grow faster. This system works well for me - I don't want to be in the garden every day.

 

[m4Rko]

i gave them 1 ml per liter of water.
ill take your advice to notice and i hope that they will recover well.
tough i still have some issues with the calibration of my ph meter and i need to figure that out so that its gonna work properly.

altought, THANKS 4 THE ADVICE

 

[HeadyPete]

cool no problem.

Try 1/2 mL per L next...

 

[m4Rko]

the ladies r recovering well. actually they recovered in about one day. so now im feeding them with half the dosis of nutrients and without supervit, and things are getting along well. ill post some pics soon.

p.s.: its gonna be a little scrog but it still has time to come near

 

[lysol]

Well that ph needs to come down to around 5.8 - but do it slowly and gradually over many days and waterings...

A .2 drop in 1 watering is too sudden???

 

[HeadyPete]

A .2 drop in 1 watering is too sudden???

Sorry don't know what you are talking about.

His ph was 6.9.

 

[HeadyPete]

the ladies r recovering well. actually they recovered in about one day. so now im feeding them with half the dosis of nutrients and without supervit, and things are getting along well. ill post some pics soon.

p.s.: its gonna be a little scrog but it still has time to come near

Great to hear!