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Currently I'm using a 100W Marineland Dual-Temp heater. It's rated for a 5-20 gal. aquarium. Currently room temp is 19C (66.2F), heater thermostat is set to 27.7C (82F) water temp is 25.1C (77.1F)... hmmmmmm??!! Also, outside temp is -2C (28.4F). My aquarium is about 3.5' from our back sliding door, but it's not that cold there.

Seeing as how the aquarium temp is lower than the 'target' temp (of 27.7C/82F) shouldn't the heaters thermostat see it has to be on continously to reach it's 'target' temp?

I'm thinking of replacing the 100W Marineland with a Ebo-Jager 100W as it has a higher gal. range, and better temp control. Good choice?!

Last edited by bala shark at 11-Jan-2005 11:00

Last edited by bala shark at 11-Jan-2005 11:01

Last edited by bala shark at 11-Jan-2005 11:01

How the heater is positioned will also determine how often the heater turns off. If placed vertically the water around the heater will warm the thermometer and cause it to turn off, if placed horizontally in a high flow area the heat will dissapate more and spread more evenly thruout the tank before turning the heater off.

Also you're asking that heater to do a very difficult job, you may want to turn the temp down a few degrees to be closer to the room temp say 76 or 78 if your fish can accept those temps (check the profile), also don't turn the temp down more than 2 degrees a day.

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Hi Babelfish,

The heater is positioned in an vertical position (as per the directions) 1" beside the intake tube to my Penguin 125. A paragraph in the instruction brochuer reads "NOTE: If water temperature is below the heater's preset temperature setting, indicator light will remain on while the water is being heated to selected temperature." Would it be fine placed if it's placed in a horizontal position?

Adjusting the temperature has two settings, 25C/76F and 28C/82F, it would take some time for the temp to come down, but safe enough for the fish?!

Thanks!



Last edited by bala shark at 11-Jan-2005 11:36

My directions said that too ...about the vertical position that is....since mines a submersible heater it's not vertical.....even though the directions said to place it in the vertical position.
Since the tank temp is 77 now, if the fish are able to handle that temp then I'd suggest trying the heater @that temp.


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