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Old 05-23-2014, 11:10 AM   #1
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I currently have a 55 gal saltwater tank. I have 2 black ocellarus clownfish, 5 green chromis, a royal gramma, green mandarin, yellow watchman goby, 2 cleaner shrimp, 5 blue leg crabs, pistol shrimp, and a couple snails. I recently bought a 125 gal tank and I'm waiting for a sump to be built. When I bought the 125 gal tank, It came with a 50gpd coralife ro/di system. I had it hooked up and everything was going great. I did a water change last night. I tested everything before I did the water change and the nitrates were 0, nitrites and ammonia were 0. I did the water change, tested the parameters and nitrates were <5 Nirtites were <5 ammonia was 0. I went to bed. I came down this morning and all my fish were dead except for my blue leg hermit crabs and my snails. I quickly tested my tank and my nitrates and nitrites were over 80 and my ammonia was 0. How does this happen? I keep a very close eye on my tank so idk what I did wrong

Last night after the water change, I went to my LFS and got some copepods for my green mandarin and added them into the tank but i don't think that would kill everything

I use a reef octopus hang on the back skimmer and a fluval canister filter. I've never had problems with anything like this before

My nitrites were 0 last night and this morning they were 5
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Old 05-23-2014, 12:30 PM   #2
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it sounds as if the tank wasn't properly cycled
and that's 1 hell of a stocking list for a young tank

for more help we need more info

how old is tank
how was it cycled how long
how much live rock
full list of parameters
salinity
temp
# 1 rule in saltwater take your time don't rush add stock slowly
overloading will cause your system to crash as it can't handle a big load
sometimes it can take up to 6 months sometimes longer for a tank to establish a good bio load going faster than the tank is working will cause bad things
saltwater is not a cheap hobby and loosing that much livestock is a big blow on your pocket

sorry bout the lose once you get the info we need up we can prob answer your question a little clearer
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Old 05-23-2014, 12:32 PM   #3
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Tank is 10 months old and has been doing great
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Old 05-23-2014, 12:33 PM   #4
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I haven't added any stock in a month. Temp is 78 and the salinity is 1.24, 65 pounds of live rock.
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Old 05-23-2014, 12:47 PM   #5
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You mean 1.024 right?
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Old 05-23-2014, 12:53 PM   #6
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to have any nitrite showing sounds to me the tank wasnt cycled correctly
or you overloaded the system with live stock to fast

Quote:
# 1 rule in saltwater take your time don't rush add stock slowly
overloading will cause your system to crash as it can't handle a big load
sometimes it can take up to 6 months sometimes longer for a tank to establish a good bio load going faster than the tank is working will cause bad things
saltwater is not a cheap hobby and loosing that much livestock is a big blow on your pocket
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Old 05-23-2014, 01:08 PM   #7
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has anyone used cleaning products on or around tank windex/air freshener/ect

were your hands clean with no contaminants on them before reaching in tank

just trying to rule things out so don't take anything personal cause I know type always sounds nasty lol

what type of water do you use tap or ro/di

do you use any kind of additives in your tank

I know you said you didn't add anything new this month
how about last month what /how many

have you done anything new to the tank
rearrange rocks add or remove

add or remove sand

anything like this that may have disturbed the system

changed filtration
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Old 05-23-2014, 01:11 PM   #8
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Wait your nitrites are at 80 ppm? That can't be right, are you sure your testing right?
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Old 05-23-2014, 01:16 PM   #9
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Originally Posted by BigRedsReefs10 View Post
Wait your nitrites are at 80 ppm? That can't be right, are you sure your testing right?
Probably a result of all the die off.

How old were the filters on the rodi that came with the new tank? Did you test the water coming out of it with a TDS meter. As that is the most recent major change I would point to that as being the cause. Could have been other contaminates in the output that yo could not test for.
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Old 05-23-2014, 01:43 PM   #10
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Probably a result of all the die off.

No niTRITE kit that I know of goes anywhere near 80ppm. A nitrate reading of 80ppm I can see, but that would most likely kill the snails and hermits first.
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