First Leaves Turned Light Orange/Bronze

Hydroponic, fed 1/4 strength nutes and liquid karma, 15 days old, cfl (3-4 " above), pH 5.8 and First Leaves Turned Light Orange/Bronze. These are autoflowering.

Any help/input/advice most appreciated.

pics woud help a million time smore

Yea they would

what nutes are you using? they nitrogen heavy? how are the roots? sitting in the water? or not? whats the drip/mist system like?