Quote:
Originally Posted by fishoholic
The packaging it came in said you could bury it under "gravel" maybe sand substrate holds the heat in more? Maybe that made it blow?  I do have it in the back chamber of the ibox and it does fit perfectly.....now as long as it doesn't blow it'll be all good 
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Possibly as my planted tanks always had gravel, the sand then planting substrate, so its probably a good insulation :P I think youll be just fine