Ok I've had my 60 gallon salt water tank for about 3 years. And everything has been great for the most part. Until yesterday. I don't know what's going on but in the last 24 hours I've lost 80% of my fish. The water test came back perfect. The fish showed no sign of distress before they died. Salt level was a little low but I corrected that. I have no idea what's going on so I have no ideas how to fix it. Please if anyone has any info please help.
Thanks,
James
No signs of mucus or anything goi on with the fish. And there gils didn't appear to be movin faster than before. The first thing that died was my blood shrimp. But I have a few emerald crabs, a couple hermits and snails and they are all fine (as far as I can tell) the last thing I added was a sand shifter about 2 months ago but nothing since. I've had the same light for the past 18 months and my son loves the fish and he can't reach the top of the tank to add anything. I just have the marine land master test kit you can get at any fish store.
This has totally come out of left field and I hate not being able to fix the problem.
how low was your salt level and how fast did you correct it?
Ok I'll give a massive water change when I get home. Sadly I'm at work now. I've lost my blood shrimp, a coral beauty, flame angel, sand shifter, 4 green chromis and a goby firefish. My yellow tang orbit bat fish and 2 clowns are still living. I haven't really rearranged the rock other than just setting one back up if it fell. No UV sterilizer but if it helps I'll add one. Thanks
It could have been any one of many things, more likely a combination of things cascaded out of control to the point where you are now.
Actual water parameters would help a lot, but just going by your stocking list, your tank was hopelessly overcrowded and it was just a question of when something was going to happen.
The sand sifter (a starfish I assume?) undoubtedly decimated the fauna in your sandbed, greatly decreasing it's ability to stabilize your tank.
As for fish - A Coral Beauty, Flame angel, 4 Chromis, Firefish, Yellow Tang, Obicular Batfish and 2 clowns. The Batfish alone can hit 20" in length, and is taller than it is long. The Tang needs a longer tank to keep from stressing. Two Dwarf Angels might get along in a 120. Maybe. And 6 members of the Clown family.
I really don't want to sound like I'm bashing you, but my best guess is that something got picked to death and the ammonia it gave off as it decayed triggered the rest.
Test your water, do a HUGE water change (or 2), run a bunch of carbon and change it out is a few days, and whatever is left might make it. If you have a Hospital or QT tank, you might want to mix up fresh water and move the survivors there until things are under control
Good Luck, and please do keep us informed!