I have a 14 gal hex as a qt. I have one of those wisper cheap filters, one decoration, not even a half inch of sand, and a new heater. I ended up leaving a few damsels in it 'cause it is in me bedroom and I didn't like it to just sit. The damsels are gone now 'cause I burned the corner of my bedroom by not keeping up on the salt creep, so it crept down my heater and melted it. (idiot)
It's about a year old and I haven't used it for a QT in nine months. Well now I have to restock my tank so I want to use it again.....actually I have been QT some of my live rock-I have a mantis I am trying to catch-so there is now two five lb pieces. Now if I put a puffer in there and he has an ich break out can I treat with copper?
I know I have to take those pieces of rock out, but won't treating many deseases kill all the beneficial bacteria, then causing a spike, then killing the fish??