Nutrient deficiency or light burn?

[treesurgeon]

Hey guys,



trying to diagnose what's wrong with a couple of auto's i'm running. Having absolutely no issues with the photos that are vegging alongside them. If anyone saw my previous post they'd recall my scepticism about calmag  currently using 1ml per litre. they've been absolutely fine for the last 6 weeks. Also worth noting this is near enough the same feeding schedule I've always ran with and never had issues. Only difference is that these are autoflowers, and I'm under a 200watt Invisible sun LED dimmed to half power at around 20 inches from the canopy?  Hope the below pictures help.



Growing in Coco using Canna A + B 3/4 strength, just added some buddastree flower burst. As mentioned also 1ml per litre calmag. PH fluctuates between 5.8 - 6.

Any info appreciated (Y)

[GMO]

whats 3/4 streght A+B in mls mate?

my gut wants to say its the start of lock out but all the data helps

[G3W2HIN]

I'm an odd ball but I'd really dial in the math on the nutes or an EC meter and play with the ph coco needs at least 10% runoff imo.

[Sage]

looks like low ph to me at a glance but I'm not a coco grower.