Often mess kill off the bacteria in the filter and can throw out test kits, I would change the food and see if the poops change, my Ray's poop like that when fed a lot of worms, it looks normal to me.
I don not see why a parasite would make the poop massively different unless passing some parasite too. I suspect it is normal and agree that if feeding they are prob fine.
I don not see why a parasite would make the poop massively different unless passing some parasite too. I suspect it is normal and agree that if feeding they are prob fine.