Banana blaze looking light

[Awg52]

Hi guys, I’ve got 1 purple lemonade and 2 banana blaze in my tent. They’re roughly day 50, grown in biobizz light mix and using biobizz nutrient chart for light mix at half strength. Lights stay on 24hr on a Mars hydro ts600.
Average temp and humidity is 22celcius and 70% humidity so in line with vpd chart.
attached some pics and you’ll notice 1 banana blaze loookibg really light, also got some sort of deficiency on the leaves also.
Anyone any ideas or suggestions

 

[namvet25]

Are you using cal/mag?

 

[Bill.de.Cat]

Water quality and PH?

 

[AMG]

Water quality and PH?

Second that, whats your PH?

 

[Awg52]

Are you using cal/mag?

Nah, definitely need to pick some up

 

[Awg52]

Second that, whats your PH?

Always PH my water to 6.2/6.3

 

[Awg52]

Water quality and PH?

Good old Scottish tap water PH’d to 6.2/6.3