I've ran nopox and also biopellets and kept anemones without problems, why would a carbon source be detrimental to an anemone? I can see if you stripped nutrients to fast. @davocean would these high nitrates have an impact on the health of the anemone?
Nopox is suspected to have a severely negative impact on corals and, in my experience, anemones. Especially if dosed in higher quantities.

