Diamond Goby is sick

+1 on flukes noe that we know he is more jumpy than anything unlike what you said.

(it's lethargic, not sifting sand, and breathing hard... still eating) cyanide poisoning a fish will eat but he can not digest the food properly. I would use prazi-pro for the 7 day it is also reef safe I have used it in my tank the only thing I noticed was my Nem closed up. May have even shrunk a bit but when treatment ended he opened up right away and is now quite a nit larger. Prazi-pro work great on flukes and freshwater dips also work well. Do not use copper unless you know they have MV as it very hard on a fishes liver and stomach.

Bill

[meenamjah]

would it be a bad idea to use prazipro in the DT?

[meenamjah]

My heater had broken.. it was running full blast even though it was at lowest setting. temp was around 92 or so. Switched heaters, and Goby seems a lot better now. Still occasionally scrapes gills on the sand... is that normal?

No that is not normal and yes you can use prazi-pro in DT I have a you have to take carbon out and I let the skimmer run to provide air in the water but I take the collection cup off it just flows back in to the sump. Other wise I would shut it off and add a air stone i=to the sump.
Copper almost always harms a fishes liver.
Bill