i was wondering if you guys could give me a hand.
I have a 90gal with live rock,live sand and 9 fish:
1-clown
1-yellow tang
1-hippo tang
1-spotted puffer
1-powder blue
1-royal gramma
1-rock beauty
1-koran angel
1-flame angel
my hippo was scratching and i added copper.
how long do i need to wait...