Yeah I couldn't find PP ANYWHERE until Sakura8 suggested Clearwater. It has a few other ingredients but sure enough, the label said the only active ingredient was PP.
I promise I would not recommend something that would harm the fish. I looked for PP everywhere and when I found out Clearwater had it... -_-
The only place I have in my town is Walmart and they actually had clearwater, plus its only like $3.
Ramshorns can be good for aquariums, I agree. But I prefer Nerite snails since they can't breed in freshwater. Then you don't have to worry about overpopulation.
Veyron Sprite Ayala
S.I.P. Okami, Bahari, Lotus, Mercy, Daihatsu, Ascari, Kuraokami, DaBaDee, Zenvo, & Stella <3