So I have six mollies four females and two males. I haven't noticed the males doing it but my females are pooping solid white string poop and a lot of it. poop does not move and no sunken stomachs. They do have some what big stomachs though. All still active and moving. They are all eating normally. Diet is balanced between bloodworms, omega one flakes and some veggies. My water parameters are ammonia 0, nitrites 0, and nitrates between 20 and 40. I do weekly water changes and have lots of plants to help with nitrates. This all started a couple of days ago. I can't seem to figure out why this is happening. Please if any one has any thoughts I would greatly appreciate it.