Cannabis seedling has brown tips and curling down

So I'm new to growing cannabis i planted x3 auto flowers and one died

One of my Seedlings is real bad now and thw other is getting worse by the day

So my problem is
They are now 12 days old and are looking like they are dying now to
I don't use any feed at the moment
My setup is very basic amazon light was about £30
One seedling is starting to go brown on a few tips and the cotyledons are curling down
I'm running the light 8 inches from the seedling
Ph is on 7

My other one the whole seedling is going brown
Someone help please
They really only 12 days old

What medium are you growing them in? Can you take a pic without the grow light on?

Looks like coco to me.
If so, your pH is way too high........should be around 6.0.
Also, you should be feeding daily to run off.........no plain water.

Iv got them in coco coir First 2 photos are of the worse seedling and thw other 2 are of the one with just one tip of the leaf going brown temperature is on 25 degrees Celsius and humidity is on 60

You might consider learning how to correctly grow in coco.
This is a good place to learn..........www.cocoforcannabis.com.

Coco basics:
Feed daily to substantial run off using a pH around 6.0.
Never use plain water.
Never let the coco dry out.

Good luck.

Thanks

Z8official said:

Thanks

Click to expand...

You're welcome.
Side note: You should have considered not starting with autos for your first cannabis grow.
Good luck.

I appreciate it thank you