like i said man, way to much water.... twice daily watered? right there is your problem... Water them maybe twice a week... when the top of the soil starts to get crusty.. or stick your finger a half inch down into the soil, if its dry, water...this is your problem...
i would say overwatered and nitrogen deficiency...youre new growth is green but your old is yellow and dying...your plant is sending all the food to the new growth and starving the old...they are prolly droopy because they are over watered