Some plant problems - leaves

Hey guys
I have a plant with a few problems
I have a fair idea of what they might be but i want confirmation from the pro's before i take any action

Firstly in my first blurry pic you will see a bunch of yellow leaves i took off the plant
they were all on the inside of the plant so might be like that because they werent getting enough sunlight, but recently i transplanted the plant into a new soil with some dynamic lifter, could it be getting an overload of nutrients from that and thats why its turning yellow?
none of the new growth is yellow, mainly the leaves close to the stem which i would assume would be getting the extra nutes

secondly there is another crap photo with the leave with spots on it, is this a PH problem? or something else, it showed up once after we sprayed the plants with bug spray
thanks for your time guys
happy growing

hard to tell from that pic but looks like a bit of nute burn on the leaves, you had any spillage at watering?

I guess your talkin about the second one?
nah i havent spilt nutes on it, but the bug spray seemed to maybe burn it
the first pic is more likely nute overload i think but yeah hopefully gonna get some good opinions. thanks mate

1st pic sucks but judging by the green veins and yellow interveinal, you should look into mg deficiency.
the second pic could be the same or ph problems or both