lost

ok so i woke up this morning after doing a 20 gal water change on my 55 reef and all my fish are breathing hard or dead i have tested my water all peramiters are great the tank has been up for 3 years with no issues no new fish have ben added in a year. only survivors were 1 mandarin, 1 b/g chromis, and red fairy wrasse trying to hang on. all inverts are fine corals are fine any ideas i have a 3in sand bed in tank for those who might ask.

 

O2 Levels maybe. What is the PH?

J

 

Can you post actual parameters?

From before and after the water change...


Wondering if there was a swing in SG and/or pH (as mentioned already).


Did you let the new water/salt mix sit for at least a day before you did the WC to let it all mix well and then take your SG reading?

Was the WC water really cold? Might have caused a large drop in temp...

Just ideas...

EDIT: this might be in the wrong section too mods.

 

what water did you use, RO, RO/DI, what type of salt, what are all of your parameters and SG? obviously something was in that water change water to mess up your tank enough to kill all those fish, just need more info.

 

lol! I was wondering when he was going to bring up something about algae...

 

I've moved this to the ASAP forum. I'm thinking O2 levels as well. What kind of fish have died?

 

the fish that have died were 1mandarin, 1 hep tang, 4 b/g chromis, mated ocallaris clowns.the parameters are after the water change i use ro water only. temps were the same when new water was added. all corals and inverts are fine my other mandarn has pulled through wrasses is still trying.and thanks for the replys

.023, 20, 0, 300, 8.4

 

This is the form for the emergency livestock issues. If you could fill this out as much as possible, it would give us a lot more info on your tank so maybe we could get a better idea of what is going on:

 

Packleader how do you access this form for future use? Hope I never do.

 

I have heard when it doubt with dying fish, put in an airstone. It will be an instant help if the problem is oxygen. My immediate question is, what container did you use to mix and add the water? I am just wondering if you had a toxin in there. I know we dont have your exact info on params just yet. I heard a story once about a guy that stored all his test kits and supplies in the empty bucket that he used for water changes. The chemicals leached into the bucket and killed the tank at the next water change. I dont know, just an idea, and a heads up to the rest of us.