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Old 02-16-2012, 01:52 PM   #1
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Cold Nights

Why wont my heater that is supposed to be plenty big enough for my tank keep up with the cold nights? It drops 4 degrees sometimes 6. I used to use a towel but ran into issues with that.
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Old 02-16-2012, 02:05 PM   #2
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You need a bigger heater. Add another to the other side of the tank.
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Old 02-16-2012, 02:16 PM   #3
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Are you using a hood on your tank? It helps with evaporation and heat loss.
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Old 02-16-2012, 02:24 PM   #4
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That's a large temp fluctuation for the fish to experience daily.

Get an additional heater and put it horizontally below an airstone. Since my husband and I switched ours to this position, there is no temp fluctuation. It holds rock steady.
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Old 02-16-2012, 02:28 PM   #5
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I've got my heater sitting right beside an airstone, so it'll distribute the heat
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Old 02-16-2012, 02:36 PM   #6
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My heater(s) does the same thing, and Im in the process of repositioning all of them horizontally and next to the filter outflow. I did find that higher power heaters did a better job though, but it might not be necessary if we can just reposition them in the first place.
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Old 02-16-2012, 03:07 PM   #7
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Quote:
Originally Posted by TT71
Are you using a hood on your tank? It helps with evaporation and heat loss.
Yes. In fact I used to put a large beach towel over the tank and that worked, however, it was tedious and one day it rested on my hob filter and leaked water everywhere.

My heater is positioned next to an airstone in the middle of the tank. It is also in front of my canister outflow. I am thinking it is just a bad heater or not strong enough.

If I put in two heaters, how do you regulate it during the day? If I set them both to 78 wont that cook my fish?
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Old 02-16-2012, 03:36 PM   #8
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No, because they will both register a combined reading of 78 in the tank and not produce more heat. Psssssssst, they won't know there's another heater there, it'll be our little secret.
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Old 02-16-2012, 03:36 PM   #9
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No. They should shut off at 78 if they are working properly.
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Old 02-16-2012, 05:16 PM   #10
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Quote:
Originally Posted by LyndaB
No, because they will both register a combined reading of 78 in the tank and not produce more heat. Psssssssst, they won't know there's another heater there, it'll be our little secret.
Hahahaha. Okay, okay, obviously im not a rocket scientist. Funny.
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