Fish tank infested with brooklynella

[Dragonet]

Hello Reefers,

I recently got the tank infected with brooklynella, I had more fish but only few are left. Im starting the Cooper treatment, in a quarantine tank, with the Lawnmower blenny, a clownfish and a black premium snowflake clownfish. In the tank remain the critters and a green Mandarin Dragonet. My question is, should I threat her with Hyposalinity or Osmotic Shock Therapy Treatment or should I leave her in the tank with the critters. I can notice a few spots on her body but it could be sand stuck in the mucus since there has been a lot of moment on the tank, she is also moving around normally and eating copepods. but I don't know if the infection will continue in the tank due to het being there, please advise I uploaded pictures and videos

 

[dwair]

Can't answer this, but I can bump the thread for you and tag @Jay Hemdal who is the resident fish expert.

 

[Jay Hemdal]

Hello Reefers,

I recently got the tank infected with brooklynella, I had more fish but only few are left. Im starting the Cooper treatment, in a quarantine tank, with the Lawnmower blenny, a clownfish and a black premium snowflake clownfish. In the tank remain the critters and a green Mandarin Dragonet. My question is, should I threat her with Hyposalinity or Osmotic Shock Therapy Treatment or should I leave her in the tank with the critters. I can notice a few spots on her body but it could be sand stuck in the mucus since there has been a lot of moment on the tank, she is also moving around normally and eating copepods. but I don't know if the infection will continue in the tank due to het being there, please advise I uploaded pictures and videos

​

Welcome to Reef2Reef!

Those fish do seem to have a late stage protozoan infection. Trouble is, at this stage it can be difficult to determine what the actual causative organism is without a microscope - the "big three", Ich, Velvet and Brooklynella all end with rapid breathing and mucus on the skin. Usually, that isn't a big issue if it were ich or velvet, as the treatments are the same - copper. However, Brooklynella doesn't respond well to copper. Also, once fish loss has taken place due to a protozoan issue, it is very difficult to stop the process fast enough to keep additional losses from taking place.

The mandarin definitely has the same disease so it will need to be treated. I wonder - could you treat all of the fish with a formalin bath and then low dose formalin in a treatment tank? You may not have access to that though.

Jay