leaves are saggy and spotty....please help!

strain: northern lights

food: 1 gallon tap water with 1 teaspoon floragro 2-1-6, 1 teaspoon peroxide, 1/2 teaspoon apple cider vinegar (to reduce ph)

ph: 4.9

desktop hydroponic system from modular hydro http://shop.modularhydro.com/Eco-Flo-Desktop-Hydroponics-Unit-Version-20-Two-Quart-DWC-EFDeskTopHydroSys2qt.htm

flowering for 4 weeks

70 to 80 degrees

1 - daylight cfl 1425 lumens
1 - daylight cfl 1200 lumens
1 - soft white cfl 900 lumens