09-08-2013, 09:37 AM
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Hi, Kimee! Welcome to TFK!
Bored is right, it sounds like Old Tank Syndrome to me, too. . .
Pay special attention to section #4 in the article that he linked you to, I've dealt with OTS in a couple of tanks that I stepped in to 'rescue,' and you'll want to be very careful to move slowly with water changes, and not to replace too much water too quickly, or the fish may not survive it. The old fish have lived in this water for some time, and though the water quality isn't ideal, they've adapted to the toxin/Ph levels in the system. It can be just as much of a shock to those fish who have lived there longest to be brought suddenly into very clean, fresh water as it is for the newly-purchased fish to be dumped into a tank with old water, especially since they're struggling already.
Once you get the water quality back to where it should be, it's best to do a single 30-50% water change every week, but I'd start with smaller, more frequent water changes until everything is back to where it should be!
Last edited by Chesh; 09-08-2013 at 09:40 AM..