so the salinity you brought him home in was .017??
your hospital tank is at .010??
your display is at .024??
where does the fragtank come in i take it its also at .024??
seems to me an easy answer is too bring the niger back untill youve finished treatment with your other fish, i had a hippo in hypo for a while and when the hospital tank was set up the buying doors were closed i didnt buy anything untill i was ready to take the hospital tank down and i had the hippo healthy(i opted not to keep the hippo and gave it away once treated)
being just a personal consumer i buy 1 fish it is quarantined for 1 mth if its healthy then its added , as a good rule of thumb i wont buy another fish for another month......now no one ever does this lol
good luck with the niger though one of my favorite fish
