Hi I have got a total of 4 different heaters (only 2 in use) and none of them would heat to the temp set on the dial. For example the one have I have in my Rio 240 is set to 21.5c on the dial but heats my tank to around 24c. Its the same with all the others if they are set to something the will heat the tank to a temp a couple of degrees higher. Does this happen with all heaters or is it just me?
Thanks
Mark
Thanks
Mark