I am pretty new to Saltwater. My wife is now hooked on Saltwater tanks and is allowing me to move on up. I just speak the truth. I am married and the women picks what I can or can't do. ( Married Life). I am going from a 40G tank with a fx4 filter. My new tank is going to be a Planet Aquarium Mega Matrix 120G with internal overflow. I have decided to go with a Tideline 30x16 sump. Here is where I get confused on the sump equipment. My 40G uses a Tunze 9004 skimmer and I have learned to get better equipment. I should have got the 9004 DC. For the 120 Mega matrix I am now looking at the Nyos Quatum 120 but I don't know if its to small for the size of tank ? For a return pump I was looking at the Ecotech M2 Vectra. I am also seeing do I go with ABS bulkheads or Schedule 80 bulkheads ? I have noticed that if I do SCH 80 bulkheads my intake and return plumbing will be smaller, and I don't know if that is the right. I appreciate the help I can get.