49 days old. What are those spots?! Plz help? Newb.

Started this random seed, turned out to be female! She's in FF Happy Frog soil in a 5 gall bucket. I started feeding her nutrients (1/4 strength) 2 weeks ago, twice a week. With regular purified water treatments in between. I think she is growing big and healthy and I wanna top and clone her, however I don't know if she's completely healthy. I noticed on one or two of the leaves she has white spots on it. They aren't the nice dark green I wanna see! I've attached many pictures so you guys get the idea. Thanks for the quick responses in advance

Are there black spots under the leaf

Look under the leaves for bugs. They can be just tiny specs like moving dust.

yea i am going for spider mites which are black spots that look like dust. if not then it is a PH problem

I don't see anything underneath the leaves. Then again I would need a 5x to see clearly. Should I invest in some FoxFarm "Don't Bug Me" pyrethrin spray?

or u can use neem oil do u know the ph of your soil

Blah, no. Started off as an experiment, didn't think it would work out so well. I can't afford the pH pen at the moment. I have a feeling its more of pH problem

Spider mites use neem oil and pyrithium keep spray 15" away or it will freeze your leave's .......

Thrips....spinosad......anything that has spinosad in it ...monterey garden spray


Thrips leave these marks

Ive already treated it once with serenade garden disease control (all natural, non toxic) which treats thrips

ok well they hatch in the soil....those marks on your leaves are not from spidermites

spidermites eating your leaves... look more like dots not long marks...like this