Diagnosis? First time grow at 5 weeks

Lowrider/ak47 feminised x2

4 27w daylight and 8 42w softwhite as of Monday. i keep them on 24/7

Using a Easy2grow kit for watering. Planted in 100% coco coir.

Using fox farm nutes.

My question pertains to the discoloring of the leaves. I think it's a bit of nute burn, but some of the leaves are yellow and others just don't look 100%. Is this just due to the natural course during flowering? I've cut out the nutes since Tuesday and have just been using regular water, which is almost 7.5 ph. I try for a ph of around 6.0 with the nutrients in the water. So I know my ph hasn't been steady, is this the result of that?

What is my next course of action? Should I not do anything and just very slowly introduce the flowering nutes in the coming weeks? Stop with the nutes all together? Just stay the course and not doing anything and just let them finish? I figure they'll be ready to be picked in 6 weeks or so.

Any thoughts on all of this? Thanks

Can anyone help me?

Well, since you are not get any replies to this, I will give you my non-expert opinion and maybe, just maybe, somebody will come along and call my opinion idiotic and give you some good advice.

It looks to me like a potassium deficiency which may be caused by too much sodium in the soil or that your pH is too high. Try to get your pH down to 6.

Personally, I would flush the soil with pH 6 water in hopes of bringing the pH down. I hope this is not too far off base.