Help my little girl

So I did get my self a clone about a week ago . It had some roots but not as long as now .

I have had problems whit high temp and some light leeks past week . Whit temperature upp to 31°c in the grow room and 27°c in the dwc . This is all fixed now and I'm running grow room temps 23-25°c. And reservoir 19-22°c

I'm using canna nutrients whit tap water . EC 1,1-1,3

Ph 5,5-6,5. I hade a little mistake about 2 days ago where I managed to lower pH to 4.5


Light: spiderfarmer 240w 60cm above plant ant att 60% power


What can I do to save my girl?

Well it’s still alive after all those mistakes so that’s a good thing.
And the new growth looks OK.
Light leaks don’t affect plants in vegetative stage.
The heat and the ph are probably why she looks like she does.
It’s a waiting game now.
I would cut off the two dead fans if it were my plant.

Bless its little heart...
Honest question here so plz don't be offended but have you tried soil?...bc this is like the 3rd thread I've seen this morning with new growers having probs with hydro n I was just wondering why not start out with something more simple like soil?