API Pimafix available in a 473ml resealable bottle An all-natural, antifungal remedy for the treatment of fish diseases. Patented formula derived from Pimenta racemosa (West Indian Bay Tree), a proven natural antifungal. Rapidly treats fungal infections on the body & fins. Treats internal & external bacterial infections. Safe for sensitive fish, reef aquariums & live plants. Broad-spectrum treatment prevents pathogens from developing resistance. Treats up to 3,581L Additional information regarding product colour: The colour can change from clear to white (and vice versa) as temperature variances change the solubility/structure of the oil within the bottle or during the extraction of the all-natural active ingredients from their trees. This is very similar to how olive oil or coconut oil will cloud at lower temperatures, for a more familiar example of this phenomena.