Black molly poop issues

[stamps]

My Black Molly has been pooping weirdly long strands, almost like white threads. Tank is a 20 gallon, parameters are 0 ammonia, 0 nitrite, 10 nitrate. Temp is 78F, and I feed them flakes twice a day. Anyone seen this before?

[waverly]

I've noticed something similar with my Mollies. What kind of substrate do you have? Mine's gravel, and I wonder if that's part of it.

[voltix9]

White, stringy poop can be a sign of internal parasites. Have you treated the tank with anything lately? I'd recommend PraziPro if you haven't already tried it. Also, how often do you do water changes?

[trailblazer]

Yeah, that sounds sketchy. I had a similar vibe with my Guppies last year. Turned out to be worms. I cut back on feeding for a couple days and dosed with General Cure, and they chilled out. Maybe try that?

[Misty]

Stringy white poop is often a parasitic issue, as others have said. I'd quarantine the affected Molly if possible. Also, what's your water change routine? Consistency there can help prevent stress, which weakens their immune system.