ewurm;1142112; said:In aquaria, the heat should disperse it self through convection.
Mystix212;1143021; said:You dont put the heater right in fron of the water output because the water hasnt got enough time to hit the heater, thus warming it. Its good to put the heater in a mild/soft current.
Mystix212;1144291; said:Do what I said and you should notice a boost in temperature over a few hours, if not less.
If the heater is in a place where is it recieving no water current, how can it distribute its heat throughout the tank?