first time growing - my plant is dying - with pics

hi, this is my first grow. i've attached a photo of my plant. i grow in soil, outdoor and i do not fertilize. today, my leaves are turned like this, but (i think) i haven't changed anything in my abitual watering so far.. thanks for any answer

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

not sure what is wrong with the plant. In soil you do want the ph to be between 6.5-7
If you more completely fill out the troubleshooting form at the top of the plant prob forums...you are then helping those that will help you...

That plant is too big for its pot. It doesn't look all that bad.
The soil pH range should be centered at 6.7. Any other numbers you have seen (5.8) are meant for hydroponics.
When you mix up your fert solution, check the pH and adjust it to 6.7 immediately before you give it to the plants.
What is your water source? Do you know if it contains a lot of dissolved minerals ('hard water')?

ops, sorry i didn't read the sticky.
E-indoor or outdoor: outdoor
E-soil, soilless, coco, aero, or hydroponic: soil
E-specific medium: earth
CSL-Soil type/brand: italian soil from supermarket esselunga
SCL-Anything you have added to the soil: nothing
SCLR-Soil or slab runoff pH: 7.5 right now
E-Water source: house sink
E-Source water pH: don't know, i can't measure it
E-Age of plant: about 2 months
E-Type of fertilizer: i haven't used fertilizers so far
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added): N/A
E-Lighting source and distance from plant: sun about 8 light-minutes
E-Air temperature (both day and night if you are running a dark period): air temperature. it is about 30°C (even more at 1PM :( )
E-Air % Relative humidity: don't know
E-Lighting schedule: check on the calendar
E-Type of ventilation your room has: it depends on wind

as i said, my water source is the sink's water. i will try to discover if there are many minerals. i don't use fert
tomorrow i should do the trasplanting :)

edit: these are the values of the water i use. i hope you can understand something even if it is italian:
http://www.metropolitanamilanese.it/...alisiAcqua.pdf