Heater Question - Tropical Fish Keeping - Aquarium fish care and resources

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post #1 of 12 Old 12-01-2008, 09:55 PM Thread Starter
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Heater Question

Hello.
I have a question about my heater. I have just recently added a heater to my tank.
It is a 29 Gallon tank with live plants.
I have the heater located in the back left corner on the bottom horizontally.
It has been in there for 5 days now and my thermometer still says it is about 76F. The thermometer says it automatically goes for 78F. It is just a Tetra Whisper Heater I purchased that is for 10-30 Gallon Tanks.

My thermometer is located on the opposite side of the tank, the top right corner in the front. My question is, why am I not getting 78F water?

Thanks a lot!

Chris

29 Gallon Freshwater Tank
Fully Planted
1 Rainbow Shark, 2 Assorted Platies, 1 Gold Lyretail Molly, 1 Black Molly, 1 Rosy Barb, 7 Neon Tetras, 6 Serpae Tetras, 3 Large Snails, Several ghost shrimp.

30 Gallon Long Saltwater Tank
Under Construction. Nova Extreme Pro T5 HO Lights, 6-39 Watt Bulbs,
G1X Protein Skimmer with 3500 Sedra Power head. 75 lbs. Live Rock, Sinularia, Zoanthids, Finger Leather, 45 Blue Legged Hermit Crabs
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post #2 of 12 Old 12-01-2008, 10:48 PM
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I am not 100% sure about this, but it might be underpowered for the temp dial to be correct. I just had to buy a new heater for my 30gal and I got one in the 30-50gal wattage range. In order for my tank to stay at a cool 80 degrees I have to keep the temperature dial saying 74. If this is true of most/all heaters, you might want to try setting your dial warmer than you actually want the tank. Someone else might need to chime in on whether I am correct on my assumption here.
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post #3 of 12 Old 12-01-2008, 11:06 PM
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what is the temp in the room the tank is in? it could be that the room is too cool/cold for the heater to raise the temp in the water any higher. you might need to go to a bigger heater or add another one to the tank and run 2 heaters.

Steve
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post #4 of 12 Old 12-02-2008, 05:46 AM
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You might try as suggested, turning the heater up a click or two if you are able to. If not ,I,d get a larger heater. The settings on the heater themselves in my view, are near useless. Best to check the thermometer that you have in the tank. I use the thermometers that stick to the inside glass with suction cups. hope some of this helps.

The most important medication in your fish medicine cabinet is.. Clean water.
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post #5 of 12 Old 12-02-2008, 06:30 AM
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If I'm reading this correctly you purchased a heater without a temperature dial or any adjustment correct? It's just supposed to go to 78?

If so most of these heaters are very small, the odds are that the heater just doesn't have enough wattage to raise the temperature. If you could post a picture or link to the kind of heater this would help.

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post #6 of 12 Old 12-02-2008, 02:27 PM Thread Starter
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The room temp is about 76F usually. Here is a pic of the box the heater came in.
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File Type: jpg IMG_2247.jpg (109.4 KB, 19 views)

29 Gallon Freshwater Tank
Fully Planted
1 Rainbow Shark, 2 Assorted Platies, 1 Gold Lyretail Molly, 1 Black Molly, 1 Rosy Barb, 7 Neon Tetras, 6 Serpae Tetras, 3 Large Snails, Several ghost shrimp.

30 Gallon Long Saltwater Tank
Under Construction. Nova Extreme Pro T5 HO Lights, 6-39 Watt Bulbs,
G1X Protein Skimmer with 3500 Sedra Power head. 75 lbs. Live Rock, Sinularia, Zoanthids, Finger Leather, 45 Blue Legged Hermit Crabs
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post #7 of 12 Old 12-02-2008, 02:48 PM
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I would say the room temp is fine at 76F. As long as the water temp doesn't dip below 70F you should be fine. Plants especially prefer cooler water and I can't see any advantages of raising your water temp any higher. I don't use heaters in any of my 4 indoor tanks and my fish are fine.
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post #8 of 12 Old 12-02-2008, 07:51 PM
Kim
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Is the heater in an area with good water flow? Sometimes, if there is not enough water movement around the heater, then the water immediately next to it will get hot, triggering the thermostat to shut off. Also, putting the heater say, next to the filter, will ensure that the entire tank is the correct temperature.

20 gallon long: 3 adult Neolamprologus similis + about 11 fry of various ages; low light planted tank
20 gallon long:2 freshwater dwarf puffers (Puff Puff and Poofer); medium-light planted tank
10 gallon: 1 male betta named Wormy; low light planted tank
10 gallon: 1 male betta named Dante; low light planted tank
2, 5.5 gallon tanks that are currently empty (I see more fish on the horizon )
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post #9 of 12 Old 12-02-2008, 07:55 PM Thread Starter
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Next to the intake of the filter or under the output?

29 Gallon Freshwater Tank
Fully Planted
1 Rainbow Shark, 2 Assorted Platies, 1 Gold Lyretail Molly, 1 Black Molly, 1 Rosy Barb, 7 Neon Tetras, 6 Serpae Tetras, 3 Large Snails, Several ghost shrimp.

30 Gallon Long Saltwater Tank
Under Construction. Nova Extreme Pro T5 HO Lights, 6-39 Watt Bulbs,
G1X Protein Skimmer with 3500 Sedra Power head. 75 lbs. Live Rock, Sinularia, Zoanthids, Finger Leather, 45 Blue Legged Hermit Crabs
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post #10 of 12 Old 12-02-2008, 07:57 PM
Kim
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Either works fine :)

20 gallon long: 3 adult Neolamprologus similis + about 11 fry of various ages; low light planted tank
20 gallon long:2 freshwater dwarf puffers (Puff Puff and Poofer); medium-light planted tank
10 gallon: 1 male betta named Wormy; low light planted tank
10 gallon: 1 male betta named Dante; low light planted tank
2, 5.5 gallon tanks that are currently empty (I see more fish on the horizon )
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