Am i in trouble

Hi

I have a grow on in 8m2 area
26 plants
12" filter 10 " intake
Feeding canna a and b through to 3 rd week flower now I'm on bio buzz bio bloom and algamic
Temp lights on 29c and lights off 18c
Humidity off 52% on 45%

I noticed I had mites 2 weeks ago and are dealing with them as they look gone however my leaves are turning yellow but not in all the girls please see pics

They are still turning yellow and crispy on ends some of them is this the aftermath of mites or mute burn ? I don't know help much appreciated

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