[christyf5]

I run the output of my phosban reactor directly into a filter sock. Before running the output into the sump I run about a gallon or two into a bucket to get out the major particulates and then turn the reactor off to let everything settle, then carefully ramp up the flow to where I want it. Anything that makes it through the sock is likely to settle in the sump. I've never had issues with any red dust in the main tank. Theres so much algae and particulates that build up on the inside of the sock it makes it hard to determine just how much red dust is making it into the sock. I would say it settles down after the first couple of hours.