Fritz Protoshield

[Grelby]

Has anyone on here used Protoshield in a reef tank. And if so what was the outcome and how were the corals affected if at all?

 

[EmdeReef]

Has anyone on here used Protoshield in a reef tank. And if so what was the outcome and how were the corals affected if at all?

No, but none of the active ingredients strike me as particularly effective against velvet which is one of their first claims:

Active Ingredients: Chitosan, D-Limonene, Manuka Oil, Neem Oil