I doubt it was over watered, I was away for 2 days and the soil dried out, and the leaves looked the same as they did when I was watering a little more frequently. The soil drains well and doesn't stay wet too long.
So, I used Happy Frog soil with bottom 1/3 of pot containing amended super soil sold on Amazon mixed with more Happy Frog. It's supposed to be PH balanced for Cannabis without having to add anything. I haven't added nutes since this method is supposed to be "set it and forget it"
But I'm wondering now if I should get a PH tester and see what's going on.
It's probably good to have a decent soil probe anyway but let's hope she grows out of it. Hopefully just the roots hitting the bottom layer
Is your light 300w at the wall? What's the model?