Mass tank deaths overnight

I think it was oodinium I had, not white spot. Hard to tell. Well maybe it was the cause. Another fish died today because of the disease so the treatment didn't help one bit. I think I will loose the rest of the fish now too. At least then I can run the tank for a couple of months with no fish so the disease will die off and I can introduce new live stock to the tank.
 
I think it was oodinium I had, not white spot. Hard to tell. Well maybe it was the cause. Another fish died today because of the disease so the treatment didn't help one bit. I think I will loose the rest of the fish now too. At least then I can run the tank for a couple of months with no fish so the disease will die off and I can introduce new live stock to the tank.

Yes, it did not look like cryptocaryon irritans; more like brook or velvet. However, oodinex advertises itself as effective on oodinium (velvet) too, which clearly it is not.
 
Odinex is a copper base medicine. That was what kill your shrimp and likely a lot of the fauna in your rock and sand. it really doesn't matter what they say, look at the ingredients in the meds then look at the individual ingredient and search what effect it have on your tank.
 
You need to pull the fish into a seperate tank to treat them and then add an appropriate medication there. Also, don't add any coral or inverts at this point you need to resolve the issue that your fish have as well as recognize that your live rock and sand could have absorbed some amount of the copper in the medication you used. You can try running copper removing media but honestly there is a chance that inverts and coral won't be happy in there for a good long while
 
Your tank will likely never recover from this med. What happen to copper is that it bind to the sand and rock. High pH is OK but at time of low pH like at night or when you have a little problem, the pH drop and the copper will come out of the rock and back into solution. These events just not enough to kill your invertebrates out right but will keep them from being healthy.

I am sorry that you will likely have to discard your sand. If you want to reuse your rock you may have to acid treat them. Use copper binder will help somewhat.

Back in the 1990's one of my tank got semi crash when one of my pump housing cracked. It was an old style Rio pump. As soon as I see the animal in distress, I found the problem right away. I did tons of water change. I lived on the water so I just pump the water from Corpus Christi Bay and change water. The shrimps, and tons of worms died. LPS, and clams was semi Ok, SPS bleached but great majority lived. My tank was never the same after that. I had repeated algae outbreak, coral does not grow well. Fish OK and fat but coral and invertebrates never did well after this event. I broke down the tank after about 18 months, discarded everything and start over. Moving the corals to the new tank, they recovered and did well.
 
So after using a reef safe treatment which is safe for inverts live rock and live sand I need to basically bin the complete lot?
 
Anyone used Oodinex successfully? Claims to treat fungus, virus, ich, velvet. It's either a miracle drug or total waste of money. Wonder what the active ingredient(s) is/are.
 
I believe this stuff is similar to Seachem's Paraguard. It does not seem to have copper. While copper is the first treatment for Ick, it is not the first choice for velvet and I believe not very effective for it. Most experts recommend Formalin which has its own dangers. Malachite Green IS a secondary treatment for both and will work under the right circumstances. It is far less harmful to the fish than either but it does have some risks to the human- cancer. I have treated both Ick and Velvet with good results years and years ago but, today, I only use Paraguard as a broad spectrum general cure. I also dip new arrivals with Paraguard before quarantine and possible further treatment. I really do not think it is any good for the imbedded phase of Ick but I think it does kill the free swimming phase plus it is good for fungus/ some bacterial infections.
I do believe the OP's tank was too new for all the additions- 2 months? and I bet nothing was placed in quarantine. He has had a terrible lesson and I hope all of us can learn from it. A fallow period will do his tank great benefit and I THINK he has yet to foul it with copper.
Good luck
RJ
 
It was def the whole shrimp in the shells and the tank is 140l. I have a firefish, yellow tang, the clown and a little orange fish that is completely harmless. I also have 2 rosebud bubble anemone's and a few small corals.

Seems like waaaaaay too much of a bio-load for a month old 37gal tank to handle. & possibly treating w/ copper...SLOW DOWN...esp. 2 anemone's...They need a stable, mature system at least 6 months old...
& the tang...well, I won't be the tang police, just the anemone police...;)
Do you have a QT tank to treat the fish in, & a friend w/ a tank that can house the corals & anemones while you treat fish w/ correct medication?
 
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I have had corals for a month and seem healthy also anemones a week which are also looking very healthy also before placing them in the tank I was doing water tests every day and they were all very stabble. Once the tang gets too large for the tank I have a nice home for it to go too. All fish but one was qt at the shop for 2 weeks so it's clear which is the start. Going by everything I have seen about the treatment it doesn't contain copper.
 
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