Please Help (Pics)

Planted these 6 days ago (clones ) in FF OF ... Watered and then watered again 3 days later .... (distilled water with super thrive sea fuel and some magical)

It looks like a deficiency of nitrogen and potassium ....
and the roots are turning reddish purplish


Someone please tell me what this is and what i should do !??????????

other plants are slightly bright yellow a couple have burned tips ...but for the most part are healthy and growing strong , this is the only one that is this bad

do you have them in a humidity dome?? whats the lights youre using?

no humidity dome ..... i have a humidifier in the tent 45% humidity ... 1000watt mh air cooled

Def not nitrogen deficiency, you would see even yellowing if you did. I doubt its potassium because plants dont need much potassium until they start to flower. To me it looks like a few things, mainly pH imbalance and lack of circulation. What is your pH at and what is your circulation like? temps?

Calcium def

your ph maybe low but a calcium deficiency google it

PH is tested 6.2 .... I only use distilled water , and ph up down solution to get it perfect ... as for circulation , i have a aircooled hood which moves alot of air ... and an occilating fan .... i doubt its circulation ...