Hydor inline heater with wet/dry filter?

[jeffopentax]

I have an eheim 2229 wet/dry filter. I'd like to get a hydor inline heater. Does anyone know if this will work, since there isn't a constant flow in the return line? Takes about 20 seconds for float chamber to fill (no return flow), then 20 seconds of return flow. Anyone used an inline heater with such a filter? Thanks in advance!

 

[Reefing Madness]

 

[jeffopentax]

Afraid that doesn't answer my question :squigglemouth: