morf Posted January 25, 2005 Report Share Posted January 25, 2005 in defense of alan, the dimensions can be important rather than just volume. if the 200 litre tank is more like a cube then fair enough - one heater. if it was a long shallow narrow tank - two heaters, one at either end - or cold spots galore. I dont mind what method peeps use for describing their tanks, but the advice will be more accurate if we get all the info. Quote Link to comment Share on other sites More sharing options...
HummingBird Posted January 25, 2005 Author Report Share Posted January 25, 2005 Well I've ended up putting a 300w in the 4ft and the 200w in the 2ft. They seem to be doing ok, but the tank's temperatures rose about 3 degrees today because of how it is is Quote Link to comment Share on other sites More sharing options...
Caryl Posted January 25, 2005 Report Share Posted January 25, 2005 Are you sure it wasn't the room temp? My heaters don't come on at all at this time of year. In fact I often have to start cooling them down! Quote Link to comment Share on other sites More sharing options...
Wok Posted January 25, 2005 Report Share Posted January 25, 2005 Just as a side note: Would it be best to place the heater close to the outlet flow of the filter so that the water is warmed when the water enters the tank and then gets pushed around? :-? Better than placing a heater in an area of the tank where there is no circulation. Just an opinion. What do you guys think? Placement of heater is also important. I have placed my heater next to my spray bar expecting it to heat the water and have it pushed around the tank. Quote Link to comment Share on other sites More sharing options...
HummingBird Posted January 25, 2005 Author Report Share Posted January 25, 2005 Yeah that's what I meant to say Caryl, they rose a few degrees because of how *hot it is* :roll: (weather wise) Quote Link to comment Share on other sites More sharing options...
suphew Posted January 25, 2005 Report Share Posted January 25, 2005 It is a good idea but remember the heater will create its own circulation (as the hot water rises), its more important to make sure there are no areas with no circulation or you will get cold spots. It might be better to put the heater into the dead spot to get the circulation going?? Quote Link to comment Share on other sites More sharing options...
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