maybe too much water. the plant should reach whats at the bottom of the pot. my pots are HEAVY when watered and end up super light when they are dry and thats before my plants show any signs of dehydration. from your pictures it looks like the one thats a little slower to flower is the main one drooping. that dirt looks terribly dark and wet. how often do you water? i had a huge photo plant in a 3gal pot and needed to give her almost a gallon daily, but the soil would get dry and brittle, does yours get brittle and if so, how far down?
cheers and good luck.
I water every 4 to 5 days when the pot is light as a feather, the pic looks wet because I took it right after watering. The problem is this particular plant droops WAY before the pot feels light. The other 2 plants I have are fine letting them get completely dry. I'd guess all the weight is in the bottom of the pot when the top looks dry, but there's no way to really know for sure if that's true.