I guess if the
RO from the
LFS has
phosphate you could try circulating it with a bag of
phosphate remover. While we were on vacation my tank was overfed and I had
cyano when we got home. I kept siphoning it out and changing water but it came back within a couple of days every time. I finally gave up trying to get rid of it using natural methods and used Red Slime Remover.
