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| General Reef Discussion In this forum we discuss issues related to keeping marine and reef aquariums in a friendly flame-free environment. |
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07-18-2006, 05:13 AM
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#1
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Little Fishy
Join Date: Jan 2006
Location: Cornwall - UK
Posts: 67
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Fish Have Died!
2 shrimps and 4 fish have died in the night 
I done a 20% water change over the weekend and installed a de-nitration unit.
Its been baking hot here and the tank temperature went upto 29 degrees C. Would this be the cause?
It actually happened during the night, and the evening before the fish and tank temperature were fine!!
Im gutted...
Could it be another reason? ive had the tank for 6months and everything has run smoothly until now.
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07-18-2006, 06:05 AM
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#2
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Shark
Join Date: Jan 2005
Location: maryland
Posts: 1,019
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What is a de nitration unit?
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07-18-2006, 06:12 AM
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#3
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Saltwater Mom
Join Date: May 2006
Location: Ga
Posts: 5,868
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Was wondering that myself. Seems like it could be the culprit if no other changes. Fish usually can handle higher temps a little better than corals. No chemicals were used near the tank or around where you mix your water were they(accidently)? How are test #'s now?
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Jena
Newest member of the BRW crowd!
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07-18-2006, 06:56 AM
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#5
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Admin/ Super mod
Join Date: Aug 2003
Location: New Castle, Delaware
Posts: 20,364
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the heat and that de nit may be the fcasue. what is the rest of the parameters of the tank?
usally when th elights are out you have a better chance of things cooling down..
more details please
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Tim
need something to read? just ask me.
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07-18-2006, 07:07 AM
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#6
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I've got the REEF rash!
Join Date: Nov 2004
Location: New Jersey
Posts: 34,144
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Sorry to hear that!
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07-18-2006, 08:08 AM
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#7
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Shark
Join Date: Apr 2005
Location: NEW YORK
Posts: 2,072
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Sorry you had such a loss, never nice, especially to wake up to!
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07-18-2006, 08:19 AM
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#8
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The Bitter Mod
Join Date: Apr 2005
Location: Atlanta
Posts: 5,586
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Sorry for your loss
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07-18-2006, 08:29 AM
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#9
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Little Fishy
Join Date: Jan 2006
Location: Cornwall - UK
Posts: 67
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Not sure on the readings yet, as im at work.
Just been into my LFS and they reckon its the weather. Im in th UK and its abnormal temperatures for here.
Just hope the other 3 left in the tank are not dead tonight!!
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07-18-2006, 09:51 AM
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#10
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BIG SMELLY MOD
 
Join Date: Dec 2004
Location: Denham Springs, LA
Posts: 18,739
Reviews: 21
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That sulfur Denitrator I don't know, I have a pretty large one and I picked it up and have not done any real research on them as yet, So I have not hooked up, I Know they do recommend running reactor media or Crushed coral with them also to help balance or remove some of the sulfur before it reaches the tank. But You are dealing with sulfur. That may have been the problem and well temps if it real go warm. I would look into them two area first
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 Vince aka VINNIE 
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07-18-2006, 10:04 AM
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#11
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Little Fishy
Join Date: Jan 2006
Location: Cornwall - UK
Posts: 67
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I questioned this is my LFS, and they said the denitrator would not do any harm.
He runs one on his own tanks.
I'll just have to check some tests tonight and start over again.
Im also going to buy a fan to keep the water cooler.
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07-18-2006, 10:05 AM
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#12
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Shark
Join Date: Dec 2005
Location: Yuma, Arizona
Posts: 1,478
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Sorry about your lost. Hope everyone else makes it.
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55gal... BB of course! 
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07-18-2006, 10:11 AM
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#13
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BIG SMELLY MOD
Join Date: Dec 2004
Location: Denham Springs, LA
Posts: 18,739
Reviews: 21
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Well I don't know, Like I said I have read some but have not did all I want to on the subject before I hook mine to the tank. Everything I have read is that they can take sulfur in the water as ocean water hads it,. certain amounts of it. the problem here is not alot of people used them. as far as the temp, I have gotten all the wy to 85 86 degrees on my tanks and never lost anything. . The fan will help, and let us know what You find if You do find what the problem is, It will help all of us down the road to try and help someone else. Good luck
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Vince aka VINNIE
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07-18-2006, 11:28 AM
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#14
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Reefless Reefer
Join Date: Jun 2002
Location: Durham, NC
Posts: 20,559
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putting a fan on the tank blowing on the waters surface is a great idea. did you turn off any pumps or anything over night. if the waters surface had gone stagnant than you could have run out of O2. this would affect the larger critters first.
G~
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07-18-2006, 11:46 AM
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#15
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Little Fishy
Join Date: Jan 2006
Location: Cornwall - UK
Posts: 67
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My girlfriend just called to say the remaining fish are still alive (2 clowns, 2 bangai cardinals, 1 mandarin) and look relaxed - they were gulping this morning.
Before i left this morning i cooled the water and left the lid off - may be it was too hot or stress?
I didnt turn anything off, the only thing it could be is the heat or the denitrator, but i kept this on as i left this morning, so if it was a sulphur leak, id imagine that would have all died? - but im no expert so keeping my options open till I test everything tonight. Although I dont know how to test if it the denitrator causing the problem. My LFS assured me it was not that?
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