The worms don't bother the fish at all. they r mostly at the bottom of the tank feeding on left over food (Oscar eats like a messy pig, so she messes up her tank.)

I try Mardel to see if it would help. My fish guy said he hasn't found away to get rid of them, but only control them. I'm his second case ever with them & they r only in Oscars tank & not in the pond & I dump Oscars tank water into the pond weekly. I know why they don't last in the pond. I have goldfish & swordfish in there that will feed on them.

These leach like critters so far r only on the tank glass & at the water line. I looked at Mango's head & saw nothing & he's in perfect health.


Can u ask ur dad what he used to kill the red worms?? I really hate sticking my hands in the water & getting them on me, they r gross. BUT I know hot water kills them, but I don't know about u. But I'm not boiling Oscar & Jack alive hehehe