SOIL I found a bit of yellowing on one of my pre-veg flowers leaves. What does it mean?

[static]

Hi guys, first timer here, was looking at my pre-veg leaves today and on one plant in particular I noticed this yellow patch shining through, under the green.

What can it mean?

A bit about my setup - Organic supersoil, 480w samsung chip LED lighting, RO water testing at 6.5 pH

thanks very much in advance for any help!!

[Tersky]

It's hard to tell if that is an issue or just a damaged leaf. leaves get damaged sometimes and it's nothing to worry about. However that being said it could be a pest issue. The yellow is kinda almost in lines which makes me think leaf miner, but caterpillars and inchworms can produce something that looks like this as well. I would check the entire plant with a magnifying glass to make sure you cant see any pests. If you dont see any, just keep an eye on it and if you notice more damage or strange leaf changes you can look up by picture here https://www.growweedeasy.com/cannabis-symptoms-pictures and if that doesnt help you can always post back here!

I wish i could be more specific but it may be too early to tell exactly what it is as the symptoms are mild.