I have a male guppy that has white stringy poo. He doesn't swim around much and only eats a tiny bit. I QT'd and used jungle parasite clear since I've read that stringy white poo often means an internal parasite. I also gave him a pea in case it's constipation. He still has the weird poop but seems a little more lively. It says on the bottle that you can repeat treatment after 48 hours. Should I treat again tomorrow if he still has the white stringy stuff? Could it possibly be something else? Should I add any salt to the water? Any advice would be appreciated. Thanks!