Second grow same problem

And it's probably my fault for not posting sooner. Anyway, I've had the same problem both times, and it's frustrating as hell.

Using/how I'm doing what

5.6 ph in nute res
Advanced A B for veg/flower
Rest are all advanced, used to use the online calc but Advanced told me not to use it, more on that later
So using:
Earth Tea (veg/flow)
Carboload
Voodoo
Sensizym
Bud Blood
Big Bud
Final Phase
Overdrive

Not in that order, all I ever did was go about 60-70% max of what the online calc said to use for my res

Ambient 66-80F
1000W HPS
Ebb and flow
Light is about 3ft at this point, I feel like I'm punishing them if I go lower.

Called Advanced, they said forget the calc if you aren't using EVERYTHING on the list. OK, so I am now by the label. Going on the low side of everything now.

Using GH's ph down, tap comes in at 6.4-6.8

Add the Sensi A and B separately, as told. Also adding them last after everything else in the res, if that matters. Read it somewhere here.

Had bug problems, think I'm over it but it came from my friend's clones, which has also happened both times. Got rid of them for the first, but yeild was poor. Was GREAT stuff, holy cow and I've done A-Dam and a few others, kinda know what it should be like anyway.

More on bugs. Spider Mites. I got them with the clones, positively got rid of them before last flower. Brought in more clones, and guess what? So I have confirmed all killed and am going to wait out another 2 weeks to make sure they are gone. No dead bugs in my bud, thank you. I can wait.

Good tip- the 50/50 alcohol solution gets rid of the mature ones well, used neem to get rid of the rest, kill whatever I could and have also cleaned all walls. Very good about cleaning around here.

Strains are confirmed NL and BB. Also about 4th gen off seed.

My buddy, who is a pest himself, grows great looking plants but they don't compare bud-wise to mine. But the yeild is very low.

Very purple stems throughout the process, more on the NL (indica?). Anyway, the BB seems to take flowering better.

I have a new one going, but am tenative on posting more until I get this straight.

Leaves are eagle clawed. Tips burn. Necrosis is the ultimate fate for my shade leaves.

Res stays relatively steady on PPMs. Fill with tap (after it sets out for a day or so) and then ph down a little. Fill with about 2-3 L per day. They are drinking and I think the light evaps a good amount.

Roots from last grow were incredible. Solid and good looking mass, clear. Just great.

Also, finish was very light, fluffy almost until a good drying and curing just blew us away. Great finish, but it seems like I've got an invisible wall in front of me.

WTF?