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Old 04-25-2012, 07:21 PM   #1
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90 degree problem

Anyone know why my tank temp is 90 degrees?

My house is constantly between 72 degrees and 78 degrees. I just noticed its at 90 degrees. I have an 8 bulb nova extreme light fixture but I only keep 4 bulbs on most of the time. I have a regular HD bulb in the sump that I was keeping on 24 hrs but just recently turned off due to the high temp.

I don't want to buy a chiller. Any other thoughts on how I can keep temp low?
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Old 04-25-2012, 07:30 PM   #2
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check your thermometer to see if its broken and giving false readings or its possible that your heaters internal stat is pooched and its constantly on
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Old 04-25-2012, 08:13 PM   #3
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It's also possible your lighting is a factor, it's surprising how much heat the add to the system. I would put your light in the sump on a timer and run it at night as this will help reduce ph swings in the evening and it will help stabilize the temp. I would also suggest raising your lights above the tank a couple inches. This should help cool things off and if it doesn'tdefinately check out the heater.
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Old 04-25-2012, 08:37 PM   #4
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the lighting doesn't have that big of an effect on the temperature of the tank. 2 or 3 degree shift i can see from a 4 lamp T5 but not 12 even from all 8 i don't see thsat happening
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Old 04-25-2012, 09:15 PM   #5
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What is your heater set at? Do you have a lid on your tank? What kind of thermometer do you use?
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Old 04-25-2012, 09:33 PM   #6
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I have it set at 75 degrees and I don't have a lid. I have a hydor theo heater.

I opened all my cabinets and turned off all the lights and my temperature is at 88 degrees now.

Originally it was a little over 90 degrees.

Could the pump be over heating the water? Not sure what could get the water so high. I am slowly cooking my fish.
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Old 04-25-2012, 09:34 PM   #7
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These are 8 T5 bulbs.
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Old 04-25-2012, 09:36 PM   #8
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Also I have had my sump light off for two days now.
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Old 04-25-2012, 09:46 PM   #9
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Get temp down. Any fish or coral? Did they survive?

Freeze 2 liter bottles full of water and put in tank.
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Old 04-25-2012, 09:55 PM   #10
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All fish and coral are alive. My hammer corals have not opened.

The only difference I have done is I added 2 hydor koralia 1400 wavemakers to my DT.

I could add the 2 liter bottles but that would only be a temporary fix.
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