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Old 11-24-2012, 10:44 AM   #1
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Armegedon??

As odd as it may sound I just joined this site last night (was going to ask about small snails in my 50gal cichlids tank and I woke up this morning and they are all dead!? There are literally 13 full grown cichlids all dead. The tank is well established - 6 years old- and I am in shock and not sure where I should look too first. It did seem like the water was warmer than usual 85 degrees so I'm assuming my thermometer malfunctioned - is there something else I should check? The only survivors are two small "babies" that we're born about a month ago...please
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Old 11-24-2012, 10:48 AM   #2
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Why is the tank 85 degrees? I would get that down to around 79 or so... If it was always at 85 and then you think it went higher that could certainly kill a few.
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Old 11-24-2012, 10:51 AM   #3
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It was always at 78, but when I saw everyone dead the first thing I checked was the temp and it was 85- I just pulled the plug on the thermometer. If it has been 85 for an extended period could that have killed them? To be honest the water temp is something I rarely check anymore.
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Old 11-24-2012, 10:52 AM   #4
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What are your water parameters? (Ammonia, Nitrite, Nitrate) Has anything changed recently like any new additions to the tank? Where the fish showing any signs of strange behaviour or appearance (spots, swollen belly, red gills, etc)? Also did you do a water change last night or add anything to the water?

Sorry for your loss. Hopefully we can help get to the bottom of this.
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Old 11-24-2012, 10:56 AM   #5
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If the temperature was at 85 for an extended period of time I doubt that would kill them all at once. If the heater malfunctioned last night and the temperature suddenly shot up from 78 where it should be to 85 that could do it. 7 degrees is a big change if it happenned over only an hour or 2
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Old 11-24-2012, 10:59 AM   #6
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Thanks twestacot... No changes, no new additions, everyone looked well amd my last water change was 2 weeks ago. I am going to check the parameters now - of course I need to get a new test kit as ran out of strips
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Old 11-24-2012, 11:03 AM   #7
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test strips are worthless, get yourself a liquid test kit
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Old 11-24-2012, 11:04 AM   #8
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The one thing you will find on this forum is that a lot of the most experienced posters will recommend not using strips as they are known to be inaccurate. If you can get your hands on an API Freshwater Master Test Kit that is pretty much recognized as the most accurate on the market and pretty much the gold standard on these forums.
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Old 11-24-2012, 11:09 AM   #9
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Thanks rocksor - the strips were my back up and am going to get the liquid kit now. By the strips it looks like my nitrates are thru the roof. How can this be from a tank that has been so established and I've had multiple "litters" over the past 6 months - wouldnt that be a testament to the water quality being good?
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Old 11-24-2012, 11:18 AM   #10
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Yes but nitrates are the end product of the cycle. This could be somewhat elevated by all the dead fish but I would also suggest upping water changes to at least once per week. Water changes are the best way to keep nitrate levels under control. I do a 50% water change weekly for example.
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