mufret;261844 wrote: That's a much better reflector but will still have issues because of the dimensions of your tank. The pendant is 14.5" wide and your tank is only 12" wide so you'll be losing light either to the front or back of the tank. Most of the smaller reflector (SLS RO III , PFO Mini reflector, ect.) are designed to give you 24" of coverage so you're going to end up with shadows at either end of your 30" tank, if you want to use a single halide.