Bottle of Reeflux I got to eliminate minor bryopsis in 35 gal water box AIO says that I can start using carbon after 3 days. This is different from other instructions I have seen online and forums. At any rate I did add carbon after three days as certain zoanthids did not appear to be enjoying the treatment. All other corals and fish are fine including some easy sps. Also noticed snails weren't to happy but bounced back quickly. Any thoughts on this? Seems odd to me. You would think carbon would remove the treatment pretty fast. Now on day six of treatment.