Well your tank looks really good. So you are doing this because the numbers are “bad”. I suspect that aquariums and corals can thrive at markedly different levels. And this is from a guy who runs at nitrates between 1 and 2 and phosphates at .03.
You could try Chaeto. It is good at reducing nitrates and phosphates. But you usually need to get. strong light for your refugium. Also, you do not want to get phosphates or nitrates too low. I think if you reduce phosphates, you might need to reduce nitrates. Oh, if you go with chaeto you might end up dosing nitrates and phosphates.
You could try Chaeto. It is good at reducing nitrates and phosphates. But you usually need to get. strong light for your refugium. Also, you do not want to get phosphates or nitrates too low. I think if you reduce phosphates, you might need to reduce nitrates. Oh, if you go with chaeto you might end up dosing nitrates and phosphates.