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Old 07-29-2013, 04:30 PM   #1
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My fish keep dying

I have a 55 gal saltwater tank that has been set up since July. I am currently running a fluval 406 canister with Phosguard, carbon and chemipure. I also have a sea clone HOB skimmer that I empty 1-2 times a week. Skim mate is very dark. My sg is 1.024 am 0 trite 0 trate 0 kh 12 ph 8.2 temp 79 phosphate .5 calcium 440. 2 months ago all my fish died. They were in the tank for 3 months very happy and healthy. All died at one time overnight. They were a small yellow tang, coral beauty, 2 pajama cardinals. I did. 50% WC and let it sit for a month running the filters. Added 3 green chromis, all died within 24 hours. Went to my LFS and explained the situation, they said do another water change then add a hearty fish.. This weekend I bought another coral beauty, died within 6 hours. I do have coral, rhodactis mushroom, fine grape , a colony of plays, pulsing Xenia and a colony of zoos. They are all thriving, however the zoos have only been opening halfway. Does anyone have any suggestions on how I can fix or what the problem may be? I am running 2 x 54w t5 HO bulbs one actinic and one Ocean Sun.
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Old 07-29-2013, 04:31 PM   #2
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I mean been set up since January **
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Old 07-29-2013, 06:15 PM   #3
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After reading on other posts, I feel it could be marine velvet as soon after introduced to the DT they have very rapid breathing then begin acting lethargic. I drip acclimate for at least 30 minutes before introducing.
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Old 07-29-2013, 06:24 PM   #4
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Originally Posted by Tim_G View Post
After reading on other posts, I feel it could be marine velvet as soon after introduced to the DT they have very rapid breathing then begin acting lethargic. I drip acclimate for at least 30 minutes before introducing.
Test your copper and ammonia
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Old 07-29-2013, 08:41 PM   #5
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Do you have any live rock in the tank? How much? Agree test for amm and copper...
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Old 07-29-2013, 08:52 PM   #6
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I have 60 lbs of live rock 1 1/2 in deep live sand bed. No copper no ammonia.
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Old 07-29-2013, 09:23 PM   #7
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I have 60 lbs of live rock 1 1/2 in deep live sand bed. No copper no ammonia.
Do you QT they could have a bacteria.
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Old 07-29-2013, 09:28 PM   #8
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I do not, but am going to start a qt tank. I am thinking one of the fish introduced it.. If I run a uv sterilizer will it kill the pathogens/ velvet already in the DT?
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Old 07-29-2013, 09:32 PM   #9
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I had one fish kill four before so I QT everything now. I would not add the uv but that's me others may say different.
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Old 07-29-2013, 09:33 PM   #10
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I do not but am going to start one this week. I think a fish I purchased my have introduced the problem. My issue now is that I feel the harmful bacteria/ parasites have reproduced and infected my tank.. If I run a uv sterilizer, will it kill the problem?
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