I have never heard of a MUD filter, but what filter combination i find works great is a Bak Pak Protien skimmer with a marineland emperor bio-wheel filter with the filter pads replaced with nitrate removers, phosphate removers, and carbon.
Mud filters IHH (I have heard) are costly to set up and need to be replaced like every year.
Never used them but, also, IHH they work very well.
I use LR and LS. thats it.
Alot of people also use skimmers. I recommend one for newbies.
Dan