yesterday i tried watering with water + lemon. now ph il 7.3. sometimes i read on internet that i need 7, other times 6, or even 5.5-5.9.. which is correct? there are also formed some holes in the leaves, as you can see from the photo. i don't think they are parasites because the holes look like chemical made and i've already found some parasites and succesfully destroyed them. you can also see how the leaves has degradeted in this meanwhile.. can you tell me why is this happening? is just the ph or also fertilizers (i remind you that i haven't use fertilizers so far)? before using fertilizers i was thinking of lowering the ph..

the first pic is low res