Dog face has VELVET... Help quickly

[lildirty77]

My dog face has marine velvet and i am having a hard time finding products to treat her. I know copper isn't a good idea, but I need some help. I have been having a problem with the nitrates in the tank as well and did a 3/4 water change to rid the tank of the nitrates, then administered metronidazole.
What are easy ways to keep the nitrates low???:help:

 

[beth]

What are the symptoms? Actually, copper is a viable treatment. Any medications in the display tank can be harmful. What type of setup do you have?

 

[lildirty77]

well the symptoms are as follows, scratching, dusty colored stuff on her, won't eat, lethargic, over active slime...
I have a 55 gal tank with 2 penguin 330 filters plus a protein skimmer, a powerhead and air stones. The rest of the fish that were in there are in my upstairs tank. There were 3 damsels in there, well also a tang, but the nitrates were really bothering him so I moved him upstairs. So currently in the 55 with the parasites is Puff and in the 30 gallon there is a baby porcupine puffer, 5 damsels, a tang and brittle star. Too many fish, I know, but I have no place to put them