So i just upgraded from a 120 gal to a 210 reef tank. when I did the change over I used about as much of my water from the 120 as I could but that was only about 80 gallons. I had a small cycle (used API quick start) and finished through that and now im getting a little bit of diatoms on the sand bed. One concern is the quantity of junk suspended in my water column and how it doesnt seem to be going away. This is leading my back to question my sump and skimmer. Now the previous owner of this 210 was using it as a shark/stingray FOWRL setup. They had a crystal 30 sump and a reef octopus diablo 160 or ss1000 skimmer. I know its only rated to 180 gallons so that has cause me to raise an eyebrow. I'm tempted to go back to my dosing of NOPO X but not sure if i should start that regimen yet as i barely have nitrates. Im curious to hear from you experienced reefers on my setup and how to optimize it to have a beautiful stable tank for my livestock. (I should also add that i have two returns running an eheim 1260 and a mag 9)