Spots appearing on leaves

This is my first attempt at growing, and I’ve noticed some damage/discoloration spots showing up on a few leaves. I appreciate any help y’all can give.

Some info: Growing indoors, in a grow tent. 150w LED lighting. Humidity kept between 72 and 77% at 70 to 75 Fahrenheit.

The strain is ZSkittlez Auto, after germinating it went directly into a 5 gallon cloth bucket, with Fox Farm Happy Frog soil. Soil PH is currently between 6.0 and 6.5.

First picture is day 7 post sprout. Spots first showed on one leaf, one of the first two leaves,l after sprouting.

These next pictures are day 8 post sprout. The spotting has increased on that leaf

and is now showing on a second leaf, this one an adjacent fan leaf.

What does this look like, and can you point me in the right direction going forward?

Thanks for your time.

-TheRook

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@TheRook hello and welcome to the ILGM forum support where everyone is helpful and there are several people that are seasoned with knowledge, enjoy! Now, I am new to indoor grows and my first big one has been wild and fun(current)…did you add any liquid food or have you had to adjust the ph a lot with a ph up and down?

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Hi what nutrients are using and have u giving them any nutrients and what is ur meduim that u are using and whats ur ph

@wilks5387 @Aussie_autos

Thank you for responding quickly, I have not added any nutrients, only water so far. No ph additives either. The plant is in Fox Farm’s Happy Frog soil, ph is between 6.0 and 6.5, tested last night when spotting first showed.

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Ok u mite have to give some cal/Mag next watering

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I’ve Been told quite a bit about fox farms specifically in seedling stage being there so sensitive but your not using a fertilizer yet or ph adjustment. Like @Aussie_autos said a little cal-mag never hurts. Be careful on how much though. Have you tested your water?

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@wilks5387 @Aussie_autos

Thank you again, I’ll grab a Cal/Mag supplement for the next watering. I have not tested run off water yet.

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If you have a look on YouTube there are ways to make ur own cal/mag at home

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Okay, let me tell ya, boy I’ve run into the ph probs and major pest issues during this recent outdoor grow, roots, nutrient intake and a big headache if let go but the ph all starts in your watering then runoff from each plant.
Happy Growing, mike

Looks like nute splash.

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Welcome to the community ! With your happy frog soil you should be good for about 4 weeks. PH water only. Your seedling will be fine .

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