So coming back from college after 4 days to do my regular water change I realized that I have this little nasty worm problem. From doing some research It seems to be Planaria. As I read I heard they are not harmful, but extremely unsightly. All the sites said 1 thing. That I needed to do a water change and put some aquarium salt. and Clean my gravel. Well here is where the problem occurs. I do not have gravel, I use pool filter sand. I am going to tell my parents to feed them less. But I was wondering if there is a way to get rid of Planaria. Keep In mind that the fish I have are Clown Loaches, Clown Knife, Bichirs, and Parrots. And Though Clown Loaches eat snails they dont seem to be getting the planaria. Any Ideas?