I Don't Know What To Do!!!! PLZ HELP

Hey guys, so I got this issue, at first i thought it was nitrogen deficiency then after some research i figured it was nutrient burn. But I'm not sure or what to do any help would be great.
Environment: 76F, 55% Humidity, 5 CFLs, white posterboard walls, Herb Seed starting soil mixed with some sand for drainage. BOTANICARE Nutes and CAL MAG, bottled water PH'd to 6.5

Older (Lower) leaves are dieing. Starting by yellowing at tip and working way to edges and inwards toward stem while edges curl up as well. One i gave more nutes and it looks worse but was to start with for some reason. The other is better and I dont want it to get worse but it has slowly been getting worse.

Pics no good dude.
Try again.
Many things can cause yellow leaves.

sorry had put them directly in message

Have you fed yet?
Looks like about 2 1/2 weeks old. I wouldn't feed just yet, even though pic 1 looks like hungry.
Have you checked the PH of your runoff?

There actually just over a month. It started on a window sill just to try growing. I've grown a bit obsessed since my parents find out and are ok with it so i went indoors full on and started spending some money and researching. so there prob really like 6-7 weeks. But they started to take off and grow at a good pace once i went under lights and fed first time which was maybe a week ago. But to answer ur ?'s i have fed twice to both. The one that looks worse i watered a 3rd time with the cal mag i got too recently while just flushing the other. but it was already worse off. it wasn't like feeding it the 3rd time made it worse then other. And i have not checked run off but they could use water so i can do that now..i know the run off is usually yellowish. I usually water till runoff is clear. anywhere from 10-18 fluid ounces. pots are rather small. I might add i have no idea about PPM but have seen it quite a bit in my readings. tried looking it up and couldnt find much. though i only tried for 20 min.

ok so runoff ph is about 5..