Salinity problem - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 21 Old 05-21-2008, 07:29 AM Thread Starter
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Salinity problem

i have a problem, i setup a 75gallon aquarium last dec 2006 w/ 4 clown fish, 4 blue yellow tail damsel and a wrasse.. suddenly yesterday may 20, 2008
1 wrasse, 3 clown fish, 2 yellow tail damsel died one by one up to right now as i got home from work... they started dying yesterday when i also got home from work.

and as i checked my water params, i was shocked salinity level is at 1.04 ? is that whats causing their death ? all my fish are 1 year old above and i bought them really small and now they have grown up and i was really sad seeing them dead realizing i bought them babies and i successfully raised them to how big they were right now and just die one by one

can someone give me advice right away what to do ?

all is left are 2 yelllow tail damsel a clown fish

Thanks!
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post #2 of 21 Old 05-21-2008, 07:44 AM Thread Starter
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i don't have corals or anemone by the way just the fish and live rocks and some small crabs i think there were 6-8 w/c i just remember all started dying too w/ the other fish
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post #3 of 21 Old 05-21-2008, 07:54 AM Thread Starter
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and i just noticed right now, one of the remaining blue w/ yellow tail damsel has a huge white spot on it's body, chalk like white and has an almost red spot on the center, what is that ? he seems to be still strong and alive
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post #4 of 21 Old 05-21-2008, 10:07 AM
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Your salinity level is high should be about 1.022 -->1.024, did you add anything to the tank recently, what are your water paremeters?(amonia,nitrite,nitrate,ph), I would start off with a 15% - 20% water change and get the salinity to carect specs.
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post #5 of 21 Old 05-21-2008, 10:39 AM Thread Starter
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Originally Posted by seba
Your salinity level is high should be about 1.022 -->1.024, did you add anything to the tank recently, what are your water paremeters?(amonia,nitrite,nitrate,ph), I would start off with a 15% - 20% water change and get the salinity to carect specs.
i remember i added a fish forgot what it is called the blue fish on the movie Finding Nemo, he died a day after i bought him last january 2008.
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post #6 of 21 Old 05-21-2008, 11:29 AM Thread Starter
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just an update the blue yellow tail damsel just died.. now i only have 3 left 2 clowns and a damsel no signs of what i saw on the damsel that just died so far
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post #7 of 21 Old 05-21-2008, 11:32 AM
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You are in a predicament, to say the least.

You are required to remove buckets and buckets of water, replacing the water with fresh water, unsalted. This will adjust the salt levels to be within an acceptable range (1.022 - 1.025, some keepers steady it at 1.026 though). This adjustment will need to be done relatively slowly, the fish are already extremely stressed and further duress could break them entirely. Pace yourself when adding the freshwater or the salinity flux could be the last finishing blow.

Time is critical, get to work my friend or there will be a lot more dead fish where those came from.

Tanks: 40 gal FW setup, 10 gal Reef tank.

Old BC8 setup: http://www.fishforum.com/viewtopic.php?t=10744
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post #8 of 21 Old 05-21-2008, 12:03 PM Thread Starter
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Quote:
Originally Posted by MattD
You are in a predicament, to say the least.

You are required to remove buckets and buckets of water, replacing the water with fresh water, unsalted. This will adjust the salt levels to be within an acceptable range (1.022 - 1.025, some keepers steady it at 1.026 though). This adjustment will need to be done relatively slowly, the fish are already extremely stressed and further duress could break them entirely. Pace yourself when adding the freshwater or the salinity flux could be the last finishing blow.

Time is critical, get to work my friend or there will be a lot more dead fish where those came from.
i have started and removed 15 gallons and repleced them w/ fresh water. now salt level is at exactly 1.03 i'll continue tomorrow.

question ? what caused that white chalk like thing that grew on my damsel's belly ? when i got him out of the tank minutes after he died saw the middle part of that white thing like it was bitten by something ?
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post #9 of 21 Old 05-21-2008, 12:04 PM
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Quote:
Originally Posted by bugoy
Quote:
Originally Posted by seba
Your salinity level is high should be about 1.022 -->1.024, did you add anything to the tank recently, what are your water paremeters?(amonia,nitrite,nitrate,ph), I would start off with a 15% - 20% water change and get the salinity to carect specs.
i remember i added a fish forgot what it is called the blue fish on the movie Finding Nemo, he died a day after i bought him last january 2008.
Probobly a Blue Tang, did you quarantiene it for a couple weeks before putting it in. Blue Tangs usually get (carry)ich when you first put it in the tank and they probobly infected all of your fish. This fish req's at lease 125 gal of water.
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post #10 of 21 Old 05-21-2008, 06:05 PM
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Have you decided on how your salinity became so high?

It appears to me that you have been using salt water to replace evaporated water. Did you realize that salt does not evaporate? Evaporation replacement should occur with freshwater. You might occassionally replace evaporation with saltwater to account for "salt creep", but this would be rare.
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