Brand: Blagdon Features: Effective all round formula Safe for all pond fish Treats parasites, fungus and bacterial problems For use only as a pond... Treats parasite, bacterial and fungal organism outbreaks on ornamental fish. This Blagdon All In One Fish Treatment is the perfect solution, in case your fish are not feeling well. This treatment will certainly help your fish get back to full health when they aren't feeling their best. It is harmless to filters, all species of pond fish, plants and underwater wildlife. It should be used on your pond fish when they start showing signs of common fungal and parasitic infections.