New growth looks weird and deformed

Hi Guys

I'm growing indoors hempy bucket, perlite vermiculite mix
Watering every two days using canna hydro vega a+b hardwater 3ml to 2.5 litres of tap water. a little lower than the canna feeding chart. my water is very hard i also sit my water to with the lid off for a couple of days before feeding. i also add a very small pinch of epsom salt to the feed.
I think the plant has variegation as you can see in photo 10
but the new growth looks very deformed and unwell which has got me worried also a couple of the leafs have some small holes in them. can't see no bugs nothing flying around in the tent or on the plant or in the medium.
it was extremely hot here the other day and the tent got up to 92f . i sprayed the leaves with a few drops of liquid seaweed to 700ml spray bottle of water

What's those white particles on the leaves?

On the curling, I'd contribute it to heat. The younger new growth is less hardy then the older growth. More subjective to the blast of heat. You have to figure any air circulation was really hot. Basically like using a hair dryer on low speed.

The Heat and you should not spray when they are too hot, It can cause exactly what happened there.
All In All they look real good, they should come back, a bit of heat stress should'nt hurt them too bad,
as long as they don't get heat stressed every day they should recover fine.
good luck.

Good, good. had a heat wave the past week unusual we don't usually have sun in the uk
the white patches on that one finger, i believe is variegation, a genetic abnormality.

the hole, is this due to spraying?

Just a photo of my girl