aqua plants having some cool but bad markings

new to the site, with a problem
my leaves are having a yellow stripe to them... kind of all over.
as they age, the tips will curl upwards and slowly brown and die

i have a few possibilities:

-ph causing a lockout? i cant test my ph until tomorrow. i just know its below 7.5, due to a high-range ph test.
-nitrogen deficiency?
- magnesium deficiency?

THIS IS MY FIRST GROW!!!

PLANTS (4)400w MH on mover w high bay 18" reflectors
CLONES (4)t8 cool, (2)90w LED ufo's stationary.
all lights are on 24/7

4" net pots w hydroton in 5 gal buckets w air stones
running a 350 gal hydroponic system (30 5 gal buckets and 300 gal resv. (not full))...

*THIS IS AQUAPONICS... RUNNING FISH*

inside grow
room is 10 x 15 w 8ft ceiling
temp is 80
humid is 50%

i apply a foilage spinosad spray every 4 weeks

growing 4 different strains both indica and sativa

ONE MORE QUESTION...
the pots i use are 5 gallon home depot pots (w 4" black net pot lids filled w hydroton), so they are orange. they are kind of bright on the inside. the roots are kind of a greenish greyish color, but plants a THRIVING! soooooooo.... does it matter?

any input would be appreciated.
thank you!