i know this……. its a blue dye that doesnt kill the alge but it makes the water blue and cleaner looking and then theres this straw thats pretreated for the alge killing and its safe for fish and humans.
i know this……. its a blue dye that doesnt kill the alge but it makes the water blue and cleaner looking and then theres this straw thats pretreated for the alge killing and its safe for fish and humans.