Heating an 80gal - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 06-10-2014, 05:37 PM Thread Starter
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Heating an 80gal

Hi everyone! I just set up an 80gal planted tank(pics to follow) I have a brand new aqueon pro100 heater I think it's only rated for 45gals(no sure) just wondering if I can use it in my 80gal?

Just to add my 75gal has a fluval m heater 300w, thinkng of swapping it???
Thanks
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post #2 of 5 (permalink) Old 06-10-2014, 05:42 PM
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I use one 400 watt THEO heater in my 80 gal ,and 300 watt in 75 gal.
Even in dead of winter ,and home temp set back to 68 degree's while I'm at work ,they maintain good steady temp up to 82 degree's F.
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post #3 of 5 (permalink) Old 06-10-2014, 07:46 PM
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At this time of year with the temperature fairly moderate, it is a good time to check what you may need in the way of heaters. I feel the ratings don't do a very good job of figuring in all the other heat sources we may have. Filters, powerheads and lights all add heat. Depending on how much you have to keep heat from moving out of the tank, you may not need much heat. I currently have no heaters connected on larger tanks as they begin to get too warm from just all the other heat items. I would suggest just trying the smaller heater and watch if it keeps the tank warm enough. A 75-80 gallon may take 12 hours or more to cool enough to notice so it will take some time to figure if you need heat at all at this time of year. A smaller heater is safer if it ever sticks on as it will give you more time to notice before killing the fish.
I run a 200 watt on my 125 and find it is just enough when the room temperature drops to around 68 during colder times. Now when I AC down to 74-75, I find the tank temperature creeps up above 76 without heaters plugged in.
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post #4 of 5 (permalink) Old 06-10-2014, 08:04 PM
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Yeah really all depends on how cold your house gets and what temp you keep your water at. My winters can be pretty cold and my house doesnt have the best insulation, so I use a 200w in my 45gal and a 150 in my 29. Keeps everything nice and toasty. But if you live where temps are much more moderate you may find it works fine for what you need, I would not be surprised tho if you needed a lil bit more juice
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post #5 of 5 (permalink) Old 06-10-2014, 11:14 PM
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It definitely varies with room temps and the other equipment you have. The lights in my tank are under a canopy and that traps lots of it to go into the water. An open top will loose a lot more. That's where I like to just look at what my tank is doing in the way I have it set. But I have been burned too many times on stuck heaters to ever trust them again. I run with the minimum of heater and then if It comes a cold spot like a furnace going out, I always have some alternate heat on hand. I just don't let it be where it can jump up and kill my fish at any time it pleases. I have found that it works better for me to run the risk of chilly fish getting ich or something that I can deal with. When they get hot and die, I can't fix that! I try to stay on the fence in between those two extremes.
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