Brown spotting, leaf curling, yellowing on older leaves

Firstly i'd like to say thanks for helping me

Night temps 68-71F
Day temps 76-81F with real low RH like 35-45%
5.8 PH
430PPM on day 10
16 days into veg under 324w of HO t5 kept 12 inches from tops at first and now sit 8inches from tops
GH florabloom 4ml per gal
GH floramicro 2ml per gal with 30% h2o2 7ml per gal
Kept on a heat pad with a humidome cover with vents open just to maintain heat and moisture
Kept rockwool cubes at 25g and watered at 15g(50% water weight gone)
Total plant height is about 2.5 inches from top of rockwool
Roots have a slight beige, tips being a bit darker as they come out the sides of the RW

Pictures are taken under t5 fluoros besides the two in the dark



Group photo, first one is lights on, showing this to see if you think the leaves are droopy, I think a few of the worst ones are a bit.

Roots and total height

Same plant, first showed the tips burn then spots came and then the yellowing came. New growth has slight red tint.

Same one, spots came, leaves are turning lime, new growth also has slight red tint.

This one looks the best so far, it has a few yellowish spots coming in near the leaf margins

First and last are different plants, middle pic shows some leaf curl if you couldn't see it in other pictures.

"Edit - wish I put up more root pictures, that root pic was from the one with all the spots on it."

what's your foods NPK ratio? And how are you testing your ph?

0-5-4 for the florabloom and 5-0-1 for the floramicro.

I'm testing ph and ppm with a hanna 9813-5 and using standard ph up/down

What's everyone think?

I think your lacking nitrogen, get some veg food instead of using bloom... Its either that or your ph..

why are you using bloom nuets for starts? You want veg nuets. -.-.-

I was under the impression that you don't use the floraveg with the lucas formula.cause u get all the n ud need from the micro...but I will take you guys advice cause that's what I'm looking for. Going to get some house and garden nutes from my local hydro shop and ask them what I should use.

Thanks guys