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Is activated carbon bad for my surgeonfish in a marine aquarium?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish

Is activated carbon good to use in an aquarium with surgeon fish?

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on April 5th, 2018

According to a study the heavy use of activated carbon in marine aquariums can cause Head & Lateral Line Erosion disease especially on fish in the Surgeonfish Family). This allegedly can be avoided by using a trace element additive in the aquarium. Head and Lateral Line Erosion (HLLE) is a type of skin erosion that affects some species of marine fishes in captivity. Due to that information it is not advisable to use activated carbon in a marine aquarium, and specifically not for surgeon fish.

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