Purple stardawg HELP!!

Hi
Can anyone help me out ,
I have been a green finger for about 4-5 years now and came across something I feel I need to ask a solution for after sevral attempts..
I have some purple stardawg they were “monster crop” cuttings , and I expected some crazy ugly leaf development, but they started to get the 5 finger then started to produce single or 3 finger leaves again, with twisted growth?? Dark green as if it’s nitrogen toxicity and burnt tips with purple leave stem, butttt I’ve been flushing them for about 3 days with 0.4 Ec PH 6.0-6.2 and I don’t have a clue , in my tank I used liquid silicone as a ph up as I put a bit too much down in, other than that I’m not sure, to get the 0.4 ec I just topped the tank up with plain water and what ever feed was in there before just got diluted , witch was Sensi grow A and B and great white beneficial bacteria , that’s it ,pictures will be added thanks

These two pictures where from Tuesday, so they are growing but with dark silky look to leaves. And twisted new growth, not sure if the dark and purple leave Stem is the nature of the strain. But twisting of leaves won’t be, only other thing is temps getting a bit low on the night I am going out today to get a heater but only off for 6 hours as there in veg