Hello, I am planning on upgrading to a 125. I like tinkering so I am going to build my own sump out of a 40 gallon breeder. I do not want to run socks and am planning on the new Red Sea Reef Mat. I want the roller and skimmer in the first chamber. I like the Fiji Cube kit but don't want the socks. Does anyone know if the first plate is attached to the sock plate? I suppose I could take it out completely but just wondering so I fully understand before buying. I hate having regrets later after I learn or understand more! LOL.