Diesel ryder, white rhino, arjans haze#3 weird yellowing leaves problem

[Rekos]

Hi,

I would like you to give me a little help about my new grow please
Its the second grow and the plant in the picture is a diesel ryder from rhino seeds.

It is 3 weeks old
It is under a 400W hps and a 6,5 liter pot
The soil is PH 6,5-7 and it has sand on it and other stuff to retain water and air (as the producer advertise this)

The problem is that the leaves at the bottom and the middle start to loose their green colour, get yellow on the edges and than brown and dry

At first I thought it might be because it need nutes and 5 days ago I started to give it N-6 P-3 K6 nutes. It started to grow a little faster but the problem persists

The white rhino and arjans haze are 10 days old and I already can notice that the older leaves started to show the same problem as diesel ryder

Please help

Rekos Reviewed by Rekos on 09-08-2008. Diesel ryder, white rhino, arjans haze#3 weird yellowing leaves problem Hi, I would like you to give me a little help about my new grow please Its the second grow and the plant in the picture is a diesel ryder from rhino seeds. It is 3 weeks old It is under a 400W hps and a 6,5 liter pot The soil is PH 6,5-7 and it has sand on it and other stuff to retain water and air (as the producer advertise this) The problem is that the leaves at the bottom and the middle start to loose their green colour, get yellow on the edges and than brown and dry Rating: 5

[Rekos]

here are some pics inside the tent
up left - 5 days diesel ryder
up right - 10 days white rhino (old leaves started to loose the green/ not yellow yet)
down left - 10 days arjans haze #3 (old leaves started to loose the green and are a little yellow)
down right the 3 weeks diesel rider (its a she) whici i posted the info im my first post

I must add that the light is at about 18-20 inch high from the biggest plant and i have an exhaust fan and inside blowing fan

[Rusty Trichome]

Hi,The soil is PH 6,5-7 and it has sand on it and other stuff to retain water and air (as the producer advertise this)

The problem is that the leaves at the bottom and the middle start to loose their green colour, get yellow on the edges and than brown and dry
Please help

Would have better results by filling-out the troubleshooting form.
-but-
What "other stuff" to retain water? Are you talking about those water-absorbant crystals? If so, it's not really a good soil ingredient for cannabis.
There appears to be no perlite or anything to help drainage, either. Your soil needs to dry a bit between waterings.

[Rekos]

Would you be so kind to give me some directions where I can find that troubleshooting form?

Soil ingredients: shagum moss peat, common peat, humus by earthworms, clay, river sand

Another question would be if can I start to LST to increase the yeld? The plant has 8 nodes including the first one above the ground

Thank you

[Rusty Trichome]

http://boards.cannabis.com/plant-pro...anted-one.html

For starters...healthy plants increase yield. I'd wait on the LST thing till you correct what's stressing them.

[Rekos]

OK..I hope I am doing it correctly

S=Answer if you grow traditional soil - YES

E-indoor or outdoor - OUTDOOR

E-soil, soilless, coco, aero, or hydroponic - SOIL

CSL-Soil type/brand - FLORIMO (MADE IN GERMANY)

SCL-Anything you have added to the soil - IT HAS shagum moss peat, common peat, humus by earthworms, clay, river sand

E-Water source - DRINKING WATER FROM STORE

E-Source water -pH PH 7

E-Age of plant- 3 WEEKS

E-Type of fertilizer - N-6 P-3 K-6

E-Lighting source and distance from plant - 400W HPS 20 INCH FROM THE PLANTS

E-Air temperature (both day and night if you are running a dark period) (96 DEGREES DURING LIGHT AND 80 NDEGREES DURING NIGHT)

E-Air % Relative humidity - 50%

E-Lighting schedule - 18/6

E-Type of ventilation your room has - INLINE EXHAUST WITH CARBON FILTER AND A REGULAR FAN INSIDE THE TENT

[stinkyattic]

Ahh you have a couple issues.
First, bring your temps down to NO MORE THAN 85'F day/70'F night.
Your drainage is not enough I fear, but you can adjust your watering schedule for that. Part of the problem is the pots are too big for the plants, which means there are zones of sodden soil in parts of the pots that the roots can't reach, and soil chemistry goes wacky when that happens.
Do you know your runoff pH? I see no lime in the soil ingredients, and fear your soil is too acidic.

In 'basic growing' there is a sticky called the importance of a continuous canopy that you should read, and the thread embedded in it.

[Rekos]

The temperature problem is solved now!
When I bought the soil it said it has a ph between 6,5 and 7
I have a PH meter and after watering it shows a PH of 7 so it is not acidic at all

Can it be fert burn after all? Im affraid that the soil has enought ferts in it and since the plants are so young maybe they receive too much

And belive it or not the 11 days arjans haze#3 has very long roots. I have changed the whole soil in the 3 gallon pot and the roots were almost to the bottom

Do you think that only adding distilled water for a week will help plants consume the nutriends on the soil and recover?

And I have a correction to the previous post. It is an INDOOR grow not outdoor

[stinkyattic]

It COULD be too much fertilizer. But distilled water is not the solution- you still need to give the plants some Calcium from somewhere, and usually it comes from tap water that has dissolved minerals in it. If you use distilled, add CalMag Plus supplement to it.

[Rekos]

Thank you for your fast answers stinkyattic and Rusty Trichome

Here are some pics of today of the diesel ryder 24 days old! She is flowering

The most important question would be : when do I know that the plant needs ferts again?
At this moment I am thinking about letting her about 1 week withouth ferts so it can sonsume the ones in the soil but when to start feeding again than?

The same problem i encounter with the white rhino and arjans haze#3 also
First older leaves loose green , than yellow at the edges than edges gets dry and crusty

Thank you


Thank you