What is this?

[Aqualady40]

Tonight I was doing my nightly thing with my tanks and saw my platy having a long white string of poo...what is it? She is acting normal, I do weekly 50% pwc which was done yesterday. Tank is a 20h and moderately planted

http://www.aquariumadvice.com/forums/members/66406-albums11445-picture51268.html
http://www.aquariumadvice.com/forums/members/66406-albums11445-picture51267.html

Edit: pooing again right now and it is normal

 

[shellieca]

Do you have any bottom feeders or anything else in the tank that you feed veggies such as cucumber or zucchini to? I have female Bettas who munch on anything in the tank including the veggies & they will poo like that after I've fed cucumber or zuchinni.