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Old 03-15-2013, 11:19 PM   #1 
bniebetta's Avatar
Join Date: Feb 2013

So. I just set up a new tank and then realized that the heater I have for it may not work. I have an 8w heater for my 1.7 tank and a 7.5 for my gallon bowl. the bowl heater, if I remember correctly, can head 1-3 gallons, but the packaging of the 8w heater says it can only heat up to 1.5 gallons which makes absolutely no sense to me whatsoever.

I am really excited about the new tank, but am battling an internal struggle about whether I should put my fish in the 5 gallon tank with the 8w heater and whether he would be happy in there. The temperature of my house is about 70F at the least but probably not more than 75. Summer is coming soon so I almost wonder if I should just go ahead and use it since I probably wont use it much in the summer anyway. What do you think?
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Old 03-15-2013, 11:30 PM   #2 
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Join Date: May 2011
Location: Shangdong, China
It takes about 5 watts to heat one gallon, so you should have 25 watts for a 5 gallon tank. Preset heaters dont seem to work too well - they either overheat or underheat the tank. I have a tetra preset 50 watt an dit cant even keep a 1 gallon tank above 73.

Going by the wattage amount - they should be able to heat a 1-2 gallon bowl..If it were me, I would look for an adjustable 25 watt heater. Ebay and amazon might be the cheapest route.
Have a thermometer? If nothing is needing those two heaters, try putting them both in the 5G and see where the temp is at. If its about 76 or higher - use them till you can get a 25 watt

Last edited by Tikibirds; 03-15-2013 at 11:35 PM.
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Old 03-16-2013, 01:34 AM   #3 
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Join Date: Mar 2013
Location: Mojave Desert, California

Last edited by ryancalif; 03-16-2013 at 01:39 AM.
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