What could this be?

[Skycable]

Problem: Yellow/green spots on the leaves. Matt green areas under the leaves. Taco leaves.

Medium/grow method: 70% soil, 30% coco, some perlite. 5liter pot.

Been feeding organically, with every watering I gave small amounts of nitrogen, after pre flowers appeared I gave it some diluted banana peel tea.
Been watering Every 4/5 days.

water source: tap water, left to sit for 24h.

Strain/age: Californian snow auto, 29 days old

light used: sunlight, usually 10 hours. After sunset have put it in the box for another 12 hours. Lights in the box are 2 led projectors 20w 6500k and 2 led lamps 25w 2700k. Used to have another 2 20w lamps, but have taken them out.

Climate: temps hover between 28C and 34C.

Additional info: so problem started when one of my lights in the box stopped working, I bought a new stronger one, the old one was 40w 2700k and the new one is 50w 6500k. The first morning after I put the light in, the edges of the top leaves had curled up, and they were very shiny. I took the light off the next time I put the plant in the box, the wax effect is gone.
Now I have noticed that some leaves are turning yellow light green on top and Mat green on bottom. Not all of the leaves are like that.

Any advice, tips are appreciated. Thanks in advance!

 

[namvet25]

Are those temps outside or inside?

 

[Skycable]

2 more pictures of the mat spots under the leaves.

Are those temps outside or inside?

Outside

 

[namvet25]

34c is on the hot side so try not to let pot sit in direct sun or cover the pot with some mulch or newspaper. Canoeing is caused by excess heat.

 

[Skycable]

34c is on the hot side so try not to let pot sit in direct sun or cover the pot with some mulch or newspaper. Canoeing is caused by excess heat.

Thanks for the reply!
Any ideas on the underside of the leaves? They have turned mat/light green.

 

[ryangrovebags]

It looks like heat stress to me, 34C is pretty hot I would try and figure out a way to get that temp down and they should bounce back

 

[Skycable]

It looks like heat stress to me, 34C is pretty hot I would try and figure out a way to get that temp down and they should bounce back

I really hope so. At first I was really worried because I thought that an had a russet or broad mite infestation. I though that the light green under the leaves what I was seeing were eggs. I don't have a magnifying glass to check, unfortunately.