Yellow spots and curling

Hey guys. I woke up this morning and noticed a large yellow spot in the middle of one of the 5th set of leaves. There are also some smaller spots on a leave next to the big one, and some small pots on the center leave one level up, which is causing it to bend and grow weird. I checked the pH and it looks like it's somewhere between 6.5 and 7. I'm using MiracleGro potting soil and I've been using bottled water once a day for about a month and I've never given it nutrients so this could be why.

it looks like it was burnt from your light.

I was having that same problem. I moved my plants away from the light and they were doing much better.

dont add nutes yet.. mg can burn certain genetics, or strains, if other conditions arent propely met. try geting some foxfarm or happyfrog soil.. and transplant into better stuff and most problems will disapper.... just add water.

litterly with those organic soils, u can go, sometimes an entire grow with out having to add nutes.. except for n at the end of veg and p mid flower.

you say you were adding water once a day? my personal experience with MG was that it stayed soggy and didnt drain well, even with perlite, i had similar issue when i used cups that didnt drain well also in combination of lights too close

I've been watering it about once a day. I just do it whenever the top inch of soil or so is dry and crusty. The spots on the larger leaf have gotten bigger, but the ones on the newer, smaller one that isn't really pictured looks fine. I moved the light up and now it seems like it's doing better. Thanks.

add a tea spoon of dolomite lime to the top of soil and water in.

that will help with cal and mag deficentceys

they look over fert to me,take the plant out of that soil or add more perlight to help with flushing.every time you water that soil keeps relesing more ferts to your plants when you should be only addding ferts every weeek and a half only.