URGENT need to lower temp
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Old 11-18-2013, 06:57 PM   #1
mommabear1007
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URGENT need to lower temp


I guess my heater was turned all the way up, over the weekend, i lost all four neon tetras. I've turned off the heater, added 2 gallons of cold water, then took 3 gallons out, then added 2 more cold gallons of water. Temp is now 83. want to lower to 78 or so but im not sure how fast i can do this safely. Can't find answer on google or other threads. Don't want to shock the fish I have left
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Old 11-18-2013, 07:00 PM   #2
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Default URGENT need to lower temp

It would probably be best to bring the temperature back down with a large WC with treated water. If you were dropped in a gigantic boiling pot of water, would you want to get out asap?
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Old 11-18-2013, 07:02 PM   #3
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yes but wont that shock them? thought the temp wasn't supposed to change rapidly more than few degrees?
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Old 11-18-2013, 07:03 PM   #4
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the fish really don't seem stressed now?
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Old 11-18-2013, 07:33 PM   #5
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83 is no cause for alarm. Doing water changes with cold water will just cause more stress. How high was the temp to begin with?
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Old 11-18-2013, 07:36 PM   #6
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You might want to gradually low the temperature slowly by dripping cooler water into the tank or have a fan blowing across the surface of the water.
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Old 11-18-2013, 07:40 PM   #7
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83 is no cause for alarm. Doing water changes with cold water will just cause more stress. How high was the temp to begin with?
1^Neons are all good with 83.Dropping the temp to quickly is surely a good way to bring on ich!Unplug heater and let it settle.If you change more water(maybe you should) it should be fresh,dechlorinated and VERY CLOSE TO TANK TEMP.Elavated temps(although 83 is hardly elavated for tetras) reduce oxygen and increase nutrient levels.Just good fresh water(really close to tank temp) will help.
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Old 11-18-2013, 07:48 PM   #8
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83 is no cause for alarm. Doing water changes with cold water will just cause more stress. How high was the temp to begin with?
about 95 :s
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Old 11-18-2013, 07:55 PM   #9
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1^Neons are all good with 83.Dropping the temp to quickly is surely a good way to bring on ich!Unplug heater and let it settle.If you change more water(maybe you should) it should be fresh,dechlorinated and VERY CLOSE TO TANK TEMP.Elavated temps(although 83 is hardly elavated for tetras) reduce oxygen and increase nutrient levels.Just good fresh water(really close to tank temp) will help.
i've emptied 3 gallons and added 3 gallons cold twice now, about an hour apart from each other. it lowers the temp about one degree by doing that.

nitrates were 80 this morning! i'm assuming from all the dead fish. so i need to change it to get that down also
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Old 11-18-2013, 07:58 PM   #10
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search hard for all other dead fish(95 is not capable for most fish).At 83 you should stop trying to lower temp and still replace water.I would do 50% twice today,and test again tomorrow.
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Old 11-18-2013, 08:04 PM   #11
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search hard for all other dead fish(95 is not capable for most fish).At 83 you should stop trying to lower temp and still replace water.I would do 50% twice today,and test again tomorrow.
but i knew how many were in there to begin with. i'm only missing the 4 neon tetras, although the kuhlui (sp?) loach is always hiding so not sure about him. i've removed the dead fish. just did a massive trim so not a lot of hiding spots for dead fish. now i have five red minor tetras, two angelfish, and possibly a kuhlui loach. and about ten thousand malaysian trumpets.

edit now that i think about it, the trim might've spiked the nitrates also as i literally uprooted every single plant and then replanted.
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Old 11-18-2013, 08:06 PM   #12
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As others have said, I would advise against dropping the temp too fast.

The fish would have a better chance of living if you do a water change (50% or so) and allow it to gradually reach 78 or your desired temp.

Remember that replacing too much water at once not only gives them temperature shock, but also potential shock due to rapid ph or hardness change.
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Old 11-18-2013, 08:14 PM   #13
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What size tank?
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Old 11-18-2013, 08:33 PM   #14
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A word of warning!
You may know for sure how the high temp happened but rather than the temp getting turned up, it is far more likely to see the heater fail in the "ON" position. One good reason to size the heater far smaller than the charts show. When you plug it in again, be watching for it to heat full time.
Slow changes of any type are far better than quick changes. Half the people losing fish after storms kill them by getting them in normal temperatures as quick as they can after them being cold for a couple days. Their body doesn't work the way ours does.
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Old 11-18-2013, 08:37 PM   #15
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What size tank?
29 gallons. the angels will get moved to a 55 eventually. they're about 2 years old now and not quite 2 inches tall so they seem to be ok there for now
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