Leaf problems/diagnosis

[Pistol95]

Hello everyone! So I'm on my second grow and it was a still is going quite well (knocks on wood... lol). The only issue I'm having so far is that in the past few days I've been noticing these spots on my leaves and it's not all the leaves or on just the bottom. Can anybody please tell what what it could be. I've also checked the pH for both plants mediums and they were from 6.5-6.8 so I don't believe that is the issue. They're being grown in Sunshine Mix #4 amended with Gaia Green 4-4-4 and Gaia Green 2-8-4. They're both a month old and I just top dressed the older one with both 2-8-4 and 4-4-4

 

[Bob's Auto's]

first of To the forum. Lots of nice people and loads of information to be found.
Second, might want to take pictures with normal lights on. This light doesn't help much
And as a third, are you also a fan of Mr. Canucks Grow?

 

[Pistol95]

I had a feeling someone might say something about the lights lol. As far as Mr. Canuck, yes I am fan. I do enjoy his videos and find them to be quite informative at times. But I attached some pics of the plants outside of the tent.

 

[Bob's Auto's]

I don't think this is something to worrie about. Looks like light signs of overfeeding to me. As you have just top dressed it could be that your medium is working hard to convert everything you gave into substances the plant can absorb... just water with plain pH'd water.

 

[Pistol95]

Yes, I've just been watering with pH water of 6.5. I've been wondering though, what would the differences be if I watered with tap water vs. RO or distilled water? For my first grow and throughout this whole grow I've been watering with RO water from my water cooler. Also, I know too much of anything is bad for anyone or anything but I'm going to assume that you can overfeed and cause nute burn with organic dry amendments?