STRANGE YELLOWING LEAVES....

[hahahiha]

HI..! I need some help here...

Well at 13/10 my 13 babies were born(age: 16 days ).. The 10 of them are notherlights and the 3 of them are bubble gum..They have had a very good growing untill the last 2 days !!

As you can see in the photos below there are these yellow spots..!!Four of the plants have this problem but i 'm worrying for the rest of them that they may become like the others if i don't do something!!! and the new leaves of the sick plants have the same problem!!

I use a 600watt lamp, i use a fun to control tempreture,which is between 28-30 C. The humidity is 40-50%(i know it's a bit of low..). I don't know the ph(i have no money to buy phmeter) of the water i use ,so don't ask..

 

[hahahiha]

more photos...:

 

[Stoneur]

hahahiha fill this out so people can help you better. Also, try to find some place that has pH strips. They are super cheap, I got a little bottle of 100 for about $2.


How long has this problem been going on?
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
How long have they been in the soil mixture they are in now?
How Tall are the plants?
What PHASE (seedling, vegetative or flower) are the plants in?
What Technique are you using? (SOG, SCROG etc)
What size pots are you using? (Include how many subjects to pot)
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
What Nutrient's are you using?
How much of each nutrient are you using with how much water?
*Knowing the brand is very helpful*
How often are you feeding?
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 of your nutrients used?
What is the pH of the "RUN-OFF"?
What method of pH test was administered? Using Strips? pH pen?
How often are you watering?
When was your last feeding and how often are you feeding?
What size bulb are you using?
What is the distance to the canopy?
What is your RH Factor? (Relative Humidity)
What is the canopy temperature?
What is the Day/Night Temp? (Include fluctuation range)
What is the current Air Flow? (cfm etc.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Are you using water from a water softener?
Has plant been recently pruned, cloned or pinched?
Have any pest chemicals been used? If so what and when?
Are plant's infected with pest's?

 

[hahahiha]

well i don't have used any nutricient yet,due to the fact that the soil i use has enough food for the first time.the age of my plants is 16 days and in 2 days i'm thinking to make their first transplant..their growth is in 5-6 node.the ph strips did't work for me.they don't show "clean" results..

anyway i believe that someone with good experience in plants could tell me what difficience is been done if he/she sees the spots in the leaves as these spots seem to be very characteristic

 

[medmaker420]

above is the form people fill out to help those with the experience to reduce the MANY possibles and narrow things down. Maybe fill that out and answers will come.

 

[Outportgrower]

Kinda looks to be a N/Ma deficiency, but hard to see due to the blurry photos. Since you never noted your run off it makes things a little hard to pin down. With your photo's and the fact that you say these are under a 600, light bleaching could also be an issue.

Try to post a few clear photo's to provide people with a nice clean clear looksee.

WhooHoo, Bouncing Pumpkins

 

[anonymousgrower]

yeah dude it could be a lot of things, need the info to narrow it down. looks like a magnesium deficiency and it either wants more nitrogen or its getting too much.

" I don't know the ph(i have no money to buy phmeter) of the water i use ,so don't ask.."

ph could very well be your problem, just because you can't afford a ph meter (you can get those ph drops and the strip that shows what color goes with what ph for 6 dollars) doesn't mean you can just forget about ph lol, its really important. A lot of nutrients are probably getting locked out due to a crazy ph level.


First thing I'd do is foliar feed them some magnesium.

 

[Stoneur]

well i don't have used any nutricient yet,due to the fact that the soil i use has enough food for the first time.the age of my plants is 16 days and in 2 days i'm thinking to make their first transplant..their growth is in 5-6 node.the ph strips did't work for me.they don't show "clean" results..

anyway i believe that someone with good experience in plants could tell me what difficience is been done if he/she sees the spots in the leaves as these spots seem to be very characteristic

Personally, I wouldn't transplant until your plants are healthy again. What do you mean by the strips aren't giving you "clean" results? If you think your strips are no good, you can test them by grabbing some orange juice and some milk and dip one into each and see what you get. The oj should read about 4 and the milk should be about 7. To me picture "100_0953.jpg" looks like a magnesium deficiency like anonymousgrower said.

Also check out this thread .

But seriously though you need to provide more info (and maybe better quality pics) to get more help.

 

[hahahiha]

i think i know what is wrong with my babies..!!!it's the humidity,that it's really low..15-40%...does anybody know how i can increase it?

 

[!!!]

you can increase it by putting a dome of your plants, but the problem could be pH. It's too expensive isn't much of an excuse. A decent pH meter can be had for $25. Just lay off the weed for a week and buy one, or do some odd jobs on Craigslist for the money ("move my sofa down a flight of stairs for $20") if you can. Losing $120 worth of seeds just because you can't put up an extra $25 for a meter is absurd, but I know the "I can get by without it" feeling.

What color were the pH strips you tried giving you?

The problem doesn't look too serious yet. Check for other symptoms besides yellowing.

 

[habeeb]

soil?

 

[hahahiha]

tomorrow i will know about the ph and i will inform you..the soil is organic with ph 6.5..and ideal for growing marijuana..their growth is still good but as u can see in the new photos the strange yellowing is been continued in new leaves!!

 

[TryComb]

how are the babies doing now??
TC

 

[hahahiha]

this picture are shotted at 11/11 .well they are still yellowing in a strange way..the ph is about 7-8 ..i know it's high..and i want to increase it some way..

Do u think i should flash them with some magnesium?

 

[desert fox]

I would say it a mag deficiency possibly even ???zinc??? or one of those weird micro elements. It is forming on the newest leaves and leaving the dark green veins. Would you say that your new growing leafs are growing more bunched up and lacking in good growth? does the new growth claw and twist? don't try to dose zinc, because the plant don't need that much. I would say the root of your problem is your PH. Copper, zinc, boron, iron, manganese all don't fair so well with PH above mid 7s and lockout in the low 8s. Bringing your PH down should fix the problem. I would also back off on the fertilizer for a few days as your bring your PH down, Your micro will work to free up your N and P to get things going good again with the new growth.