Problem after problem and now stumped, plz help

[Learner]

Hi there, first off quick note that despite my lack of posts or comments I have used this site for reference regularly n possess most of my growing knowledge from the v helpful and knowledgeable members on here for which I am very thankful...

So moved house wasnt growing for several months then setup agen, decided to scrap my hps which has served me very well n upgraded to led, normally i be very delicate n precise n never normally incur any problems (except cal-mg def at late flower which I never seem able to prevent just limit damage) however this start went horrible i originally over watered which I blame on the lower room heat from the led as I watered like clockwork how i normally would that set in a quite severe case of damping off which subsided after increased the airflow which then lead to windburn which I never encountered or even heard of b4 then after a few days things where back on track despite being stunted and now half of the plants have a kinda yellowy edge to em and seems to b spreading and I simply cannot diagnose it thru normal online scrawling, they r 25 days old, I know most of u woulda preferred i spent this time describing setup n intake and will if needed but I'm hopping sum1 will just know from the pics lol thanks in advance for any help or advice, also they r bout 1.2m from my led so can't imagine it being led burn/bleaching

 

[briman]

Learner, it will be ok mate!!! First, take a pic of her in natural light, the purple from the LEDs make it hard to judge what is really going on with her.
Second, what is her ph solution going in and ph on her runoff?
post it and someone will get back to ya!!

 

[Bilbo]

They don't look particularly stunted but they aren't getting enough light with your panel that far away, try moving it down to between 30 to 45cm, varies with different panels but you'll find a sweet spot.
I'm still a complete noob so I can't tell you much apart from that and I've found a liquid calmag additive works much better than the powder and needs a generous dose.
I think you'll need to take a pic with the led off so one of the green thumbs on here can diagnose your leaf problem, peace.

 

[briman]

might want to swing by the intro section and introduce yourself too, if you haven't yet.

 

[Learner]

Thanks for the quick response n assurance, ph 6.3, i actually had my seedlings bout 80cm from em at first n they turned bright red lol even out of the light n ive had no stretch at all theyve actually compacted a lot more than normal, its a powerful panel n advises mature plants shud b like a metre away so think I'm alrite there but thanks

 

[Learner]

And I'll take ur advise on the calmag n up it sum more i do 1 ml a litre which is the top end of the .5-1ml recommended dose n had heard too much can b v toxic so i try b too gentle maybe

 

[Bilbo]

What panel is it?

 

[Learner]

Budmaster 2

 

[Learner]

Glad to see ur having success with the led's I was bit worried at first as heard that a few years ago they was crap n now there loadsa scams invovling knock off n cheap parts n stuff

 

[Bilbo]

Budmaster 2

Move it closer mate, the 1.2m is about coverage area which is usually half the manufacturers claimed area when you put the lights at the right height.