Petco Text Logo
Petco Pet Logo

What's the best way to remove planaria worms from my freshwater tank?

Updated On September 23rd, 2025

How to get remove all planaria worms (crawling our aquarium glass in a tiny size )from freshwater tank ?

1 Answer

Most Helpful Answer

Image profile

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on December 25th, 2018

Planaria are notoriously difficult to completely remove from an aquarium. You can perform a thorough vacuuming of the gravel or substrate followed by a 30% water change every few days. Use only conditioned water that is temperature matched to prevent stress or shock to tank inhabitants. Fenbendazole or praziquantel can also be used during this process. Since you are overseas, you can also look for a product called "Planaria Zero" that is supposed to be quite effective. It contains extract of betel nut which is toxic to planaria. Use caution with any medications if you have snails or shrimp in the tank.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored