Little yellow spots

Hi Everyone, very new to this.
Growing my four auto’s Under 400 W HPS in Cocopeat with 15% vermiculite and 15% perlite. Ph is right, temp right. humidity maybe a tad hi at 70
They have been going good so far but have noticed tiny yellow spots on the end of the leaves on the tips can someone please help me out I’ve done a little research but not convinced only on two plants though. Help please would be appreciated thanks

Please post pics

Yellow leaf tips = too much nitrogen

Tracker said:

Please post pics

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here ya mate, thx for the help.
they are only small but they are there! Any thoughts, I thought I might have the light to close ( 400w hps ) at about 2ft)

Can't really help without pics

Hopefully that helps, they’re only tiny bit noticeable… thanks for the help.
I have a feeling I had the light to close at 2ft at 440watt dimmed hps

DJK 81 said:

Hopefully that helps, they’re only tiny bit noticeable… thanks for the help.
I have a feeling I had the light to close at 2ft at 440watt dimmed hps

Click to expand...

Please post some pics of the whole plant

Those pictures are terrible.

DJK 81 said:

Hopefully that helps, they’re only tiny bit noticeable… thanks for the help.
I have a feeling I had the light to close at 2ft at 440watt dimmed hps

Click to expand...

1. potato cameras suck
2. Leaf - Non issue. That 3 leaf set will be exhausted over the grow - sometimes i trim off those first sets.

Carry on.

Ok thanks