Hi people this is my first post and I'm also new to growing. I've been growing for 2 weeks now and I'm on my second day of veg and I gotta ugly problem that came up on the leafs. Can anyone tell me what it is and how do I fix it? At the moment they just getting pH water and under 600 watts hps. I'm in the process of starting the nutrition cycle now. Help would be much appreciated thank you.

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