Tropical Fish Keeping - Aquarium fish care and resources

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doughnut 11-14-2009 04:15 PM

Question on Heaters
Hey all, so I recently came across a 55g aquarium, trying to figure out what kind of equipment I want to use in it I'm pretty sure I want to go with a marineland emperor 400(should be sufficient enough) but for the heater im not positive. I've heard that the heaters to go with are the "Visi-Therm Stealth Aquarium Heaters" by marineland aswell right? I believe the general rule for heaters is 5 watts per gal. so for a 55g thatd be 275 watts. If thats the case why do they list the 55gal heater rated at 200 watts? Also would it be a better idea to get two heater say for a 45 gal tank and sync them at the same temp and put them on the opposite sides?

Thanks yall

aunt kymmie 11-14-2009 08:30 PM

I have Stealth heaters on my tanks and I prefer to use two to a tank. Reasoning is if one goes kaput I've got a backup. My fish, as with most fish, would not do well in a sudden drop in temp.

stephanieleah 11-14-2009 10:44 PM

Good idea (about using two heaters). I think I'll get another. Thanks for the info, kymmie, and the question, doughnut.

doughnut 11-14-2009 11:14 PM

Thank you very much for the advise :-D


Muni 11-21-2009 02:53 AM

A 200 watt is enough for a 55 gallon tank if its in the house or somewhere that has fairly constant heat. The higher above the room temprture the tank needs to be the more power that will be needed.

So if your home has central air that keeps it at a constant 72*F then your only raising your tank temperature a few degrees. In which case the 200Watt is great.

If however your tanks are in a area that sees larger temperature swings or you don't have constant heat in the area, such as a wood stove, then more power may be needed to deal with the lower temperatures. If it were to drop to 60-65 in the room you'd be trying to raise the tank temperature by 10-20 degrees. It takes a LOT of energy to heat water. So keep that in mind. If this is the case you'd probably be safer with a good quality 300 Watt.

These are things I've learned and things I've read. Just something to think about. I use a 200 Watt on my 55 and stays very consistent temperature.

WisFish 11-21-2009 09:17 AM

I agree with MUNI.

The stealth itself has recommended wattages based on tank size. I have a 55gal and I thought the 250 watt was recommended. You can look it up. When I first started my tank I used 2 heaters as well. After a few years I removed one mainly because the heaters never seemed to wear out. If anything I've had the opposite problem. I've had one of the heater get stuck and not shut off. So now I just use one.

The tough part with using two stealths is that they don't have a running light. You could set both heaters to the same numeric value but you can't really tell if they are both sync'ed.

I highly recommend a good thermometer and keep a second heater around in case the first one does go.

Oldman47 11-23-2009 10:16 AM

A basic thumb rule you can use is 5 watts per gallon for a reasonably warm environment. A cold room would require a bigger heater and a room at the temperature that you want your tank means no heater is needed. Most of us don't like our fish rooms as warm as the water should be for tropicals so we use the 5 watts per gallon guidance.

doughnut 11-30-2009 09:06 PM

Oh wow hey all. Sorry for not dropping by sooner..I've been out of town as of late and not had access to the forum. Thanks for the input Muni, WisFish and Ghreed :-D. I appreciate it.


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