I am thinking about making a 3D background for my tank. I have a 125 gallon tank with an emperor 400 filter. I also have a wet/dry filter. Is it possible to do this type of BG and still have proper circulation in the tank. I also don't know how ppl are placing the heaters so it would heat the water properly. I have read many threads on the 3D BG everyone talks about what to use to make them but I haven't seen any info on what to do about the filters so I must be missing something. :-? If any one can shed some light on all of this I would really appreciate it.