New Grower need some advice HELP

[SRecon]

First off hello to everyone

I am new to autoflower and i am currently doing a white widow from vision ordered from single seed center great place for the us.

My setup
Jiffy soil mixed with perlite for drainage
High output t5 floresent light 150 watt 7800 lumen
5 gal pot
Grow box setting temp 77 humidity 44%

Not sure but maybe a calmag diff
brown tips and marks on leafs but they have no yellow and are not brittle just feel like reg leafs and its only on the first two sets of leafs

Post pics when i get home

Thanks

 

[The Squid]

Hey man and welcome to the New Growers Forum. Shoot over to Intros and tell the whole clan you're here. I find that it helps with response numbers and duration and all, just to make yourself aware is all.

Hard to say without knowing more. And definitely need pics, so we'll wait for those.

How old are the plants?
What kind of water and what Ph are you using? How often are you watering?
What are you feeding?
Are you growing in that Jiffy the entire grow?
Are you getting proper ventilation?

See ya later. :smokebuds: Take care.