Herbal Planaria & Hydra Cleaner, use 1 full spoonfull (approximately 1g, spoon included) per 60ltr, either directly in the aquauarium or mix in a container then add yo your aquarium. Do a 20% water change after second day, repeat again if necessary if problem persists.
This product may effect fish and snails. Will eliminate hydra and planaria. Keep away from children, if swallowed seek medical advice.