Water stress? help please!

Hi folks!

This is my first time in a proper growroom and I have 2 ladys looking sad in week 3, I would appreciate any comment or suggestion.

Here are the complete setup:

• Seeds: Sensiseed indoor mix.
• Week: 3.
• Day temperature: 80-85°F. (18 hours)
• Night temperature: 72-75°F (6 hours)
• Fan: 18 hours in low.
• Nutrients: growing solution+liquid karma+superthrive at 480ppm.
• pH: 5.6
• Humid: 60-70%
• Light: 250w metal halide.

Thanks a lot for your time!
Cheers!

Flush them get them under the shower full some buckets with water and get the water around the water that you have been doing 5.5/5.6 run plenty of water through them about 4/5 times till all the shit is out and your left with a blank canvose.leave your plants to dry out till they are realy dry has well then start adding the nutes but start at a lower nutes than brfore and during a week or so build them up till you are on your old grow medium i think it was down to over watering but it could have been excess salt hense the flush only water once everything is settled and water when dry don't get into the habbit of you must water every day there is no need the dryer the plant becomes the more you get a healthy root system roots search out water thats why it is best to let dry then water.good luck