Plants look like shit at week 6 of flowering

WOW. First. Im relativly new at this, but everybody knows you dont use ditilled water, and what this 0 pH thing ur talking about??? I have a week left before harvest according to floweringtime of this strain. Theres no white shit on the soil surface, im using oragic ferts, so they are already very low in salts. Im just talking about mineral and residues.

why would u not use distilled water.. and sorry i meant 0 ppm, distilled water has about a 7.0 ph

ya i dont know details about ur strain or what day u had high temps or what day ur ppms were a lil high or what happend on this day or that but if ur only a week away form harvest bottom line id b flushing flushing flushing

there is nothing in distilled water, at least Ro water has some calcium in it already.

yes RO is better, and yes distilled has nothing in it, and thats what i like about it, u can add ur preference. Yes i am, that is what i do, u may not, but what we are talking about here is ur harvest, if ur a week away, again, regardless id just be flushing.

its because when u put an 8 and a ) together u get right RIU!!! Just disable smilies in text check da box boner!!!!

I tried posting my own thread, but it didnt work, so I'll try here....

My grow is about 6 weeks in, purple kush.. this is the second time this has happened. last time i just let it go because it started with only about a week left, but by the time I took it down, there were a few dead plants...

Room conditions are as follows:
1000W HPS Lights
Temp was at 78F Day 75F Night, i've changed it last week to 82F Day 78F Night as I think it was too cold for Kush at 78f Day...
Soil PH is currently around 6.5 as per the meter.
I feed every 5 days or so, food always under 1000ppm. Warm water.
I do have some bugs in the room, have sprayed with Azamax a few times with the lights off.
Humidity is at 55%

Here are the pics. As you can see the whole room is affected. Leaves are going yellow, then brown, then dying... Is this N deficiency? Nute burn? Overwater? I'm not sure...

any ideas?