Hey, what thoughts do people have for Phosban to reduce phosphates in marine tanks? Any positive or negative experiences? I may DIY a reactor but looking to put some in a media bag and place in filter sock under down flow of water. Looking for a way to reduce phosphates for coral that won't put my fish at any risk - other suggestions are most welcome. I use natural seawater, top up with RO, weekly 10% WC. Running a skimmer and a refugium with chaeto as well as macro algae in display but phosphates are between 0.2 and 0.5. Thank you!