Can anyone help me ?

flex

flex

Active Member
This is my first run of my growroom and all of my plant are looking sick.
Here is some specs :

I grow in soil : Home
I use 4x59watts cfl
Room temps is : 22 Celsius
The room is well ventilated.

Here is some pictures :

16-11-08_1918.jpg



16-11-08_1919.jpg


16-11-08_1920.jpg


16-11-08_1921.jpg


I think they has some heatstress( the temps was about 28-29 Celsius) but now it is resolved. I`m not sure about this ...

Thank to everyone in advance.
 
That could be magnesium deficiency. The pattern is indicative of magnesium deficiency anyway, with darker green near the veins. Just mix a pinch of epsom salt per plant in the water the next time you water. Many fertilizers don't have any magnesium and cannabis uses more than the average plant.
 
might be nute burn... the darker veins could be where the leaves started to get just about as much of the 'good stuff' as they could use... with the spots being the burn. Magnesium deficiency would should yellow areas amid darker green veins.... not green among darker green veins. look into your pH.
 
thanks Doctor Pot and DaGambler

i dont think this is a nute burn because they are young and there is still no nutes added except the starting nutes in the soil (Home - .The nutrients that have been added to the Plagron Grow-mix consist of a carefully selected combination of fertilizers which meet all the needs of the plant during the first three weeks.). I will get PH meter as soon as possible for sure. Any other suggestion ?
 
def mg def add epsom salt to your foliar spray but make sure you dissolve it in warm water first
 
I will get PH meter as soon as possible for sure
Click to expand...

You need to pH your water, and from time to time test the pH of any water that runs out the bottom of your pots. Even though it says on the packing that your soil comes with a pH of 6.2, watering over a period of weeks with tap water that may well be in excess of 7.5 will alter the pH of your soil.

Sometimes soils that are high in potash can cause a lockout of magnesium. Check what percentage is in your soil.

As Ripz and others have stated, this has all the classic signs of mag deficiency.

As mentioned add some epsom salts to your next feed, or you can folia feed with epsom salts too, about 10-20g per litre of pH corrected water.

Also check how much dolomite lime is in your soil mix, if there is none, then add some and pH test the run off again.
 
thanks ripz and Jonus .. i think you are right ...
i was looking into some guide in other forum and i think it is really mg deficiency... today i will definitely get some PH meter and will test my water... and will add some epsom salt ...

thanks all
 
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