Description
A chemical dye with antibiotic properties for use in freshwater and saltwater ornamental aquariums.
A long history of use across both freshwater and saltwater environments has made this one of the most versatile options in the hobbyist’s medicine cabinet, covering bacterial, fungal, and external protozoan conditions that often require multiple separate treatments elsewhere. When combined with Nitrofurazone it creates the combination known in Asian aquaculture circles as Yellow Powder.
Do not use with invertebrates
Do not use in planted aquariums
Can permanently stain tank glass, silicone seals, and hardscape
Remove eggs or perform a complete water change before expected hatch
Safe for scaleless fish
Responsible Use Always follow guidelines and directions. Can repeat as needed.
Storage Store in a cool dry location away from moisture and direct sunlight in a sealed container.
For Ornamental Aquarium Species Only
Not intended for human consumption or use on fish intended as food or sport fish






Ken B. (Verified) –