Pond Boss Forums INTRO Questions & Observations Golden Algae?

Definitely use the liquid formulation as a topical application, since this algae occupies the surface and upper water-column.
Prophylactic treatments are more practical than reactive treatments since the objective is the prevent an outbreak rather than control it after the resident fish are affected.
Not sure how much surface-area you're treating, or where you're securing your product - but the expense shouldn't be overly prohibitive compared to the cost of restocking fish.