What are your thoughts on my setup? I am setting up a 58 gallon tank and want/need the heater to be external. I am using a Fulval FX5 and have it T-off into two return lines, one of which passes over a 200 watt jager heater. I got the idea from a DYI thread over at the plantedtank.net but made some moifications do the size of my filter. I have not glued everything together yet but want to do so tomorrow. My fear is that air is going to get traped in the top of the heater section and not provide enough water contact with the heater.