Help needed for newbie.

[Sweet Herb]

Hey people of AFN :smokebuds:

Just popped my head into my tent and started to look at my four plants. They are 18 days old today. Just one of them has this slight sort of light brown rash on one of the fan leaves. The soil was dry so decided to water them. They have been fed on pH 6.5 feed everytime and soil pH is around 6.4. Just gave them a feed of half strength grow nutes as the soil is standard potting soil and lasts 2/3 weeks. None of the other plants are effected. RH and temp levels are always stable and im running a filter kit. 400w HPS is being used too at 50cm away.

Anyone got any ideas? I cant post pictures as computer is broke and my mobile wont let me upload pics.

Thanks!

 

[Sweet Herb]

Here is a link to the image, Carbon uploaded it for me

http://i47.tinypic.com/t7hlrb.jpg

 

[Carbon]

 

[Sweet Herb]

cheers carbon!
Hope somone drops in and helps my sick lady!

 

[Sweet Herb]

Anyone?
Going para about my plant! Keep going in the tent every minute.
helpppp meee pleaseeee

 

[wg]

What kind of water do you use? Up until this point you've fed no nutrients? "Standard" potting soil, does it have a name and a brand?

 

[Sweet Herb]

Im using tap water. im a newbie and didnt realise about the chlorine. just got sone out the tap and its.sitting in a jug till.next feed man. i.started to give them just less than a quater strength grow nutes from.the beggining.of.week two. I fed them today, the last feed was 3 days ago. Just fed them half strength grow.nutes before. The name of the soil is potting soil and its from wilkinsons mate.

 

[Carbon]

 

[Sweet Herb]

Cheers mate. Hope its not something serious!
Anyone got any idea whats wrong with her?

 

[wg]

Do you have the variables of the tap water you're using? I.E: Did you check with the water authority for an analysis of the water?

Is that a hole in the leaf that Carbon just posted? The white spot...

It looks like the start to CalMag deficency, but let's rule out a few other things first.. 50CM should be fine for light height..

Out of how many plants total that this is the only one effected?