Remember, the
ONLY way to get rid of Brookynella is with formalin 37%, not the 3% that you find in petco, that's water.
Use the suggested dose DAILY, until the fishes are ok, not every other day like the bottle says.
If you have corals in the tank, use the formalin at night when the lights are off and corals are closed, formalin is harmless to the corals , bacteria and inverts.
Formalin will be in your water for only 2 hours, will be gone after that, its completely reef safe, believe me.
Also very important is to supplement with the Marc Weiss Marine Fish Vital, this product is very unique and contains 1 ingredient that is proven to help the fish get rid of the disease on his own.
Formalin + Marine Fish Vital, you will never loose a fish again. Here's the link for the Formalin: Aquarium Fish Medications: Formalin Here's the link to the Marine Fish Vital: Marc Weiss Marine Fish Vital-6 OZ. at Big Al's Online=
PS: If you don't have good circulation, you might need to add an airstone to increase the oxygen in the water during those 2 hours.