VinsonMassif Posted May 24, 2009 Report Share Posted May 24, 2009 I was wondering if a water bed heater would be suitable and safe to use as an under gravel heater? One became available to me and it is 350W, so that got me to thinking. Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted May 24, 2009 Report Share Posted May 24, 2009 I think they have been used as an undertank heater but as an undergravel I don't know. You would need a sparky. Quote Link to comment Share on other sites More sharing options...
VinsonMassif Posted May 24, 2009 Author Report Share Posted May 24, 2009 I can do under tank. Just put it into a sheet of poly. Brilliant. Clearly too early in the morning for my lateral thinking switch to be flipped on Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted May 24, 2009 Report Share Posted May 24, 2009 You need to make sure you don't have a great depth of grave/sand and it is even Quote Link to comment Share on other sites More sharing options...
Caryl Posted May 26, 2009 Report Share Posted May 26, 2009 How are you going to control the temperature? I seem to remember there were valid safety reasons for not using a waterbed heater but I can't remember what they were. :roll: Quote Link to comment Share on other sites More sharing options...
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