Bleached leaves on Nebula Auto AKA Galaxy brain

Not sure what I’m seeing. 28 Days after germ.
Nebula Auto in micro octopot. 20% perlite added to promix BX in 5G fabric pot.
Jacks 202020 at 1/4 tsp gal. PH adjusted after all additions to 5.8PH
1/4 tsp epsom and 1/2 tsp per gal. (current rate, previous was about half)
10ml rhizotonic per gallon
85F/70RH lights on 450 ppfd (was 300 ppfd with no chg, increased yesterday)
75F/70RH lights off 5 hrs
Used Foop foliar spray 5 days ago once, no change.
Roots still not in res. Were growing well before transplant into micro octo.
Showing on 3 of 6 same strain.

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Complete auto tent, central autofeed res

What’s the run off ph coming in at? Potentially a deficit of magnesium.

This photo looks to me like some of your leaves.