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Old 06-02-2011, 11:23 AM   #1
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Unhappy All Fish Died after water change?

Ok. Well I had a 55 gallon tank up and running for 5 months with no issues. No algae issues water was nice and clear. Fish were all healthy and eating well. I us r/o water. I have a canister filter, skimmer,t5 lights, 2 power heads and then titanium heaters 2 200w. All my chem levels were great and salt was 1.024. I check my levels regularly. I did a 25% water change which i did weekly nothing new. And next am all fish were dead? So i figured maybe when doing water change maybe something contaminated the tank. So i drained the tank, replaces the crushed coral, removed the live rock, replaced all filter media, and re filled the tank. re placed the live rock and then the new crushed coral. Then let it sit for 2 weeks. All levels were good. I use special blend to boost the cycle. I added one damsel just to see how the tank was doing and by next am he was dead? Coud it be the live rock? what can i do next?
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Old 06-02-2011, 11:27 AM   #2
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Do you have a test kit? Test the water out of your faucet
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I CAME BACK TO CONTINUE TO SEVER THE CORD
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Old 06-02-2011, 11:30 AM   #3
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yes of coarse i have a test kit. I did state i test regularly??? I us my R/O DI unit water for all my water changes. its a 6 stage and the water comes out reading all 0's???
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Old 06-02-2011, 11:34 AM   #4
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Not sure if something can get into the live rock and stay there? how do i clean the live rock? should i re empty the water and not put live rock back in. just hate to do that and have to waste all that salt is there something i can put in the tank to make sure there is nothing in that water hurting the fish?
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Old 06-02-2011, 11:40 AM   #5
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Did you say that you replaced the filter media, and cleaned the crushed coral? What did you do with the live rock? (Assuming you kept it in water the whole time)
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Old 06-02-2011, 11:40 AM   #6
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This happened to me few monthes ago al though i did lose all fish.. what had happen was the digital thermometers i use have air/water mesurments and it was set for air which i kept turning up heater to set temp ... while doing the pwc the water felt warm but it didn't dawn on me till i saw the thermometer on the tank hit 85 .. lost a few fish dye to the rapid temp change.... now i double check.
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Old 06-02-2011, 11:46 AM   #7
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I rinse the live rock with hot water. then placed back in the empty tank and re filled and added salt. I waited 2 weeks before adding the one fish and with in 24 hours he was dead. i replaced the crushed coral and threw out the old stuff.. all new filter media was added. temp stays set at 79/80. Should i tank out live rock and start over again? How do you disinfect live rock?
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Old 06-02-2011, 11:50 AM   #8
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It sounds like you basically removed all of your bacteria. Did you/can you test the water from after the fish died? If you cleaned/replaced everything, then you probably removed all the bacteria, so you started another cycle.

The live rock can be kept, it doesn't sound like a disease problem or anything that would need the live rock to be disinfected. For live rock, I'd say swish it around in old tank water if it really needs it. Otherwise, I'd leave it alone.
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Old 06-02-2011, 11:56 AM   #9
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Quote:
Originally Posted by luv4tigger25
Should i tank out live rock and start over again? How do you disinfect live rock?
Did u rinse it in hot tapwater? Hmm to disinfect your live rock you have to make it base rock let it sit out of water for a week or so.. then scrub it rinse replace on tank it will become live rock agian
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Old 06-02-2011, 11:57 AM   #10
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Might be the dumbest question ever but are you test kits expired?
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