So I just got a 125 and need to get heaters. Id like to not be able to see the heaters so inline would be ideal. I plan on getting a fx5 filter and have looked into the hydor 300 watt heaters for it. Problem is I've read you need two 300 watt heaters for a 125. So I guess my question is would one hydor 300 watt inline heater with a spray bar be enough? If not anyone have any tips on hiding submersible heaters? Two canisters is out of the question right now. Anyway thanks in advance.
