Nute burn from watering or something more sinister?

[Sleeper143]

hi, hoping this is nothing serious, but would like someone a bit more experienced than me to take a look. This is my first grow and I have 2 plants with slightly different issues.
First is my Critical Express (Positronics). She’s 21 days old and has developed some light brown/almost white ‘teeth’ on the side of a couple of leaves:

View media item 19804Any ideas?
My second plant is a 2Fast2Vast, she’s 23 days old and has developed a couple of spots/holes on about 4 leaves but apart from them appears healthy (but I’m noooo expert lol):

View media item 19801View media item 19803View media item 19802
Any help identifying what the issues are so I can fix them before they get out of hand would be great. Thanks
@Waira @namvet25 (thought I’d tag as I know you guys know your stuff!)

 

[HandsomeJohnny]

I can't see your pics?

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[Sleeper143]

I can't see your pics?

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Weird, they’re there, well I can see them. Can you see them in my media? I only have one folder and they’re the most recent uploads.

 

[Sleeper143]

Sorry forgot to say temp sits around 28-30c RH is between 60 and 70. In Biobizz light mix, current feed is 1ml per L of silicone and 2ml per L Biobizz fish mix. About 650ml per day.

 

[HandsomeJohnny]

Weird, they’re there, well I can see them. Can you see them in my media? I only have one folder and they’re the most recent uploads.

This is what I see

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[Sleeper143]

This is what I see

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Very strange, I’ll try posting them again

That’s the CE with white/brown ‘teeth’

 

[Sleeper143]

This is the 2f2v with ‘spots’

 

[HandsomeJohnny]

Very strange, I’ll try posting them again
View attachment 1098766
That’s the CE with white/brown ‘teeth’

In my experience, yellowing/rusting around serrated edges is either nute burn or P def. I'm not sure on the 2f2v though, is it possible you've had droplets on the leaves which have burned? Or maybe some kind of pest is munching on the leaves?

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[HandsomeJohnny]

To be honest mate, they both look in pretty decent condition. I wouldn't be majorly worried at this stage

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[LazyNhazy]

Look good to me, first pic is prolly the wind rubbing the leaf edges together and second looks like it's either rubbing the sides of tent or you grabbed pot and leaf got smashed by accident. But doesn't look like anything to worry about.