CA-Delta;4387040; said:A fluval E300 is indeed a glass tube heater in disguise, however the location of the heat sensor/digital readout makes it unsuitable for a DIY housing.
http://www.hagen.com/pdf/aquatic/Fluval-E-pamphlet-Eng.pdf
This is how I thought it disassembled, don't think I want to risk my flooring over a $50 dollar heater.