Yellow / brown spots on leafs newbie help

Hello i have yellow/ brown spots on my leaf, i cut the lower leafs off as they where bad and drying out. I have been given it tap water which is ph6.2-8 and today for first time since planting i gave them some nutrients and ph was ph5.4-5.6 humidity 66% 25 degrees Celsius. they are under a 125watt cfl
The lights have been on 24 hours
I have now turned the light to 18-6
They are 2 G-13's, 1 Blue Cheese and 1 Violator Kush

You can look at the pics below
Please let me know what you think the problem is?

Cheers
Tom

Actually the plant seem healthy... But I've notice the Ph 6.2-8 does this mean between the two ? ph of 8 is really too high... If you mean 6.2 to 6.8 even there it is a little bit high.

Yeah, pH is off. It should be around 6.7, check the RUNOFF for that number. Your soil looks kinda heavy too- what kind is it?

Im using some rubbish £1.20 peat soil
I usually use tap water which varies from 6.2 to 8.0 but dont know how accurate my ph meter is?
What do you mean check the runoff how would i do this?

Cheers
Tom

Quote:

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Originally Posted by LuciferN

Actually the plant seem healthy... But I've notice the Ph 6.2-8 does this mean between the two ? ph of 8 is really too high... If you mean 6.2 to 6.8 even there it is a little bit high.

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What even with the yellow spots? and lower leafs curling over? dont forget that i cut off the worse of the lower leafs today
Also you cant really see it in the pic but at the top the steam is slightly purple

Cheers
Tom

IF you water heavily, some comes out the holes. Check the pH of that. How are you checking it? Meter, probe, drops, or strips?

Its a meter i got it off ebay heres a link to the one i got PH METER , FOR ,MARINE AQUARIUM, FISH POND,HYDROPONICS on eBay, also Filtration Heating, Fish, Pet Supplies, Home Garden (end time 30-Oct-08 14:48:01 GMT)

I'll let you know the results in 2-3 days when i next water them.
Is that the only thing it could be ph?

Cheers
Tom

Did you calibrate the meter you bougth ? As for the problem it can be related to fert too.

I know i havent over fertalized as i gave it its first lot today maybe under fertalized.
No i didnt calibrate it it dint give me anything to do it with or give me instructions on how to i presumed it would of be done already?

Tom

With any pH meter you should have a way to check accuracy, like a cheap bottle of liquid indicator drops, so that you at least have an idea it is working right.
Your plaNT doesn't actually look all that bad! Just liek you need some more light, and to let the soil dry out more between waterings, and next time you re-pot, use a decent potting soil with some extra perlite in it. Just a plain soil that is peat + lime + perlite is a classic mix. Don't put it in too big a pot, because you WANT to re-pot every 4-6 weeks for your roots to be happy.

Hello its gotten worse again have a look at the next four photos, i haven't watered it yet as the soil doesn't look like it needs it. one looks like a brown colour or burn on one of the plants.
please help :(

anyone?

Cheers
Tom

Be sure to calibrate you're ph meter, be sure to follow the indication on the fetilizers bottles... The soil still look like really wet wait before you water the plants. I don't know what else to say.

:( my ph 7 calibration liquid comes in the post 2mo so will let you know the results need a watering 2mo the light just makes soil look darker than it is, anyone know about the brown spots? also the leafs i took photos of yesterday are almost dead loosing moisture and curling downward anyone know why?

Cheers
Tom

Curling may be heat stress, what is the distance of the plant and the CFL light, check the temps near the plant to be sure it's not too hot... Did you feed the plant any nutes ?

Wouldnt heat stress affect the upper leafs then work down not the other way round? i just gave them their first nutes 3/4 days ago.

still getting worse just watered them today as they where DRY. Watered Ph 6.
Run off water 5.4

Any sudgestions?
will upload some more photos tonight

cheers
Tom

Quote:

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Originally Posted by tomcromp

:( my ph 7 calibration liquid comes in the post
Cheers
Tom

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You will need calibration 7 and 4 to set your PH meter.

does any one have any experience caliberating this ph meter ive lost the instructions and cant find them anywhere!

Quote:

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Originally Posted by tomcromp

does any one have any experience caliberating this ph meter ive lost the instructions and cant find them anywhere!

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It's simple just put your PH meter in the calibration 7.0 stir it and leave it for a minute or two if your meter shows 7.0 its ok the same with the 4 if it shows4.0 thats fine.
there should be two small screws somewhere on the meter with 7 and 4 next to them, they are used to ajust your calibration if it needs ajustment.
Meter in fluid 7 ajust to 7.
Meter in fluid 4 ajust to 4.
Meters are very sensitive so be carefull when ajusting the screw, be gentle.
I check my meter for accuracy once a month.
You can buy probe cleaning fluid to clean the probe on your meter.
One more thing don't cross contaminate any of the fluids.
Hope this helps.:)

What brand and model of meter is it? Instructions are all over the web. Mine has a 'cal' button you press, put it in the 7, then if it reads 7.0, hit 'confirm'. There are a few different calibration styles commonly seen on pH meters.
If your runoff is in the pH5 range, you should be watering in the pH 7 range!

the leafs eventually dry up and fall off the pics are 1-2 days before they them off my php meter is this one PH METER , FOR ,MARINE AQUARIUM, FISH POND,HYDROPONICS on eBay, also Filtration Heating, Fish, Pet Supplies, Home Garden (end time 30-Oct-08 14:48:01 GMT)
any ideas?

Cheers
Tom

Can you post a pic of the whole plant?
It's totally normal for low leaves that get no light to tun colors and fall.
Your plant is too big for that pot and you need to re-pot.

ill take a pic of the whole plant in a bit.
i only re-poted a week/ two weeks a go and went up majorly ill post pic of old pot agiants new one

Oh my i posted them yesterday and there gone now.Must off been all them database errors i was receiving :(
I dont think i need to re pot i only done so 2 weeks ago, and i majorly upgraded, the old pot is show in the images.
I just got them some "Terra Vega" nutrients for there veg stage and and cut the top from one node down to try make it bushier rather than tall.
Any tips to make my plants grow better /more yield?
I Just calibrated my ph meter am going to water today and let you know the results. also from the pics you thing ill need to re-pot?
If it help there are two g13's, violator kush and a blue cheese.

Naw, the perspective made it look like you did though. That's fine for now; you'll be repotting in 1-2 weeks though!

ok cool, what do you think of "terra vega"? any tip for growing bushier? anyone know why its happening to the leafs?

calabrated the ph. and here are the results
ph of tap water: 7.12
Ph of tap water after neutrients added: 6.36
Ph of runoff water: 5.82-6.27

Any sudgestions?

can anyone help me?

Quote:

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Originally Posted by tomcromp

can anyone help me?

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Your question has been aswered Stinkyattic said this. Yeah, pH is off. It should be around 6.7, check the RUNOFF for that number.

i stated he runoff there:
Ph of runoff water: 5.82-6.27
is that ok?

Between 6.5 and 7.0 is good Tom.:thumbsup:

but mine is between 5.82-6.27 does that mean i have to raise it bit?

Quote:

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Originally Posted by tomcromp

but mine is between 5.82-6.27 does that mean i have to raise it bit?

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What do YOU think?