how reef safe is metro/focus?

[boxed_reef]

I suspect my diamond goby may have internal parasites, so I started feeding metro/focus medicated food. I mix the food according to directions, 1tbsp frozen food 1 scoop metroplex 1 scoop focus, then freeze into cubes. Soon after I noticed my ORP is plummeting. I never really paid much attention to ORP, but I have the probe and it’s been pretty stable. Could this be an indication my biofilter is being impacted? Tank seems fine otherwise, any cause for concern?

 

[Scotty Buttons]

Did you use a binder with the medication?

 

[boxed_reef]

yes, focus is the binder

 

[Flippers4pups]

I suspect my diamond goby may have internal parasites, so I started feeding metro/focus medicated food. I mix the food according to directions, 1tbsp frozen food 1 scoop metroplex 1 scoop focus, then freeze into cubes. Soon after I noticed my ORP is plummeting. I never really paid much attention to ORP, but I have the probe and it’s been pretty stable. Could this be an indication my biofilter is being impacted? Tank seems fine otherwise, any cause for concern?

Effecting ORP, don't know. I have fed it in tank only as a spot feed, not broad cast feed. As far as safe, only spot feed directly to fish.

 

[Flippers4pups]

Did you use a binder with the medication?

That's what the focus is used for.