Thanks for the input. Let me give you more of my specs on the system, also I will add more pics, I wanted to do a build thread as I went along just been too busy. The rock work/ sand bed is all dry rock from marco rock. The two "islands" seen in my avatar are about 80-90 lbs each they don't look like it but they are over 2' tall so 160-180lbs in DT and I also have about 25 lbs rubble in my sump 185-200lbs total. My sand bed is about 1-1 1/4" deep. Im not trying to run an ULNS just have a small bio load, I do plan on getting a couple of wrasses, three tangs (medium size..ie purple,chevron,kole...not exactly those together just an example) and maybe 1-2 other small fish. Here is a list of the equipment I am running: Reef Octopus SRO INT 3000, 2 mp 40es, 2 gen 2 radions, 40 gallon sump, no fuge, 2 MR1 next reef reactors, 1 carbon, 1 phosphate (im not currently running but will soon) 3 4" filter socks. My tank is 52"x30"x30" and has been set up for about 3 months (3 weeks with livestock). FYI, my params are only from my salt mix, Iwasusing red sea pro and all of my numbers were off so I switched to aqua vitro salinity and did my routine water changes and brought my levels to where they are listed above. I will add some pics soon. Maybe do a build thread and go backwards. lol