Nutrient problem.

Alright growing in 3 gallon pots foxfarm ocean forest soil with foxfarm nutrients.
400w mh about 18" above. Using tap water for watering.
So basically I got lazy and just never got around to adding nutes :l until about a week and a half ago
I started adding nutes and I know this doesnt help but I have no ph meter and just want a little input.
Since I added nutes you can tell yellowing stopped but at the same time I'm just unsure of things.
From the pictures is there anything I could do to even help a little

whats your temps in there?

phos lock-out by the looks. ph, ph, ph!!! your tap water may be 8.3............you must know your ph. period. sorry......i'm a ph Nazi.

Generally 65-72. And dude I know I freakin hate myself for not having one yet -_-. Is there anyway to get it back to the 6 area without having one or just get lucky ha. Would using distilled water lower it?

looks like nutrient burn to me...since you cut off all the lower vegitation there isn't much for plant material to want nutrients in your plants so your soil already has plenty in it...back it off...you only add nutrients to soil WHEN IT NEEDS IT...and if you topdress a couple tablespoons of dolomite lime you don't need to worry about the PH of your water as long as its not something ridiculously high or low...the dolomite lime buffers the PH in the soil holding it nicely around 6.8.