4week Veg Yellow Spots On Leaves

[Kaappari]

So plants are littlebit over 4 weeks old now.. some leave edges are curling up (maybe because of low rh humidity) What are the yellow spots? PH has been stable 6,2 and ec 0.7... i thouht that plants get enought nutes because ec doesnt rise or drop...

hydroponics
29c air
20c water
45-50rh :(
1/4 STR canna aqua nutes

 

[Jack og]

I wouldn’t worry too much is the ppm and ph is on point. Get that rh handled plants look ok for now but overmothering is a symptom we all get!
Good job though staying on top of it.
What’s the type of nutes and what sort of ppm have you been feeding??