leaves curling up why ?

firsttimw

Member
Hi my seedling is jusy over 3 weeks old . 150w cfl on 18-6 temps around 75-80 n humid 45
Night 70-75 humid 35
Nft hydro
Feed water phd 5.8 n formulex 4 times a day starting couple days ago . Light around 3inch away . Since last 2 days the leaf tips are curling upm can someone help
 

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