Worked to eliminate hydra and detritus worm infestation in plant-only tank.
Used this to clear up a load of hydra and some detritus worms in a plant-only tank with a pond/bladder snail infestation. After reading how many reviews claiming this killed their snails, I was hoping this would be a 3-for-1 and get rid of those as well. I dosed using the recommended dosage twice, and after a few 50% water changes over four days (two during treatment, two after) there was not a worm or hydra to be seen anywhere, and they have not returned around 4 weeks later.<br />My pest snails did become a bit more lethargic during treatment and stopped laying eggs absolutely everywhere, but it killed very few of them (if any, as I wasn't feeding because there were no fish). I wasn't really purchasing this for that reason though, so it's not a product fault. They still lay VERY few eggs even after adding fish/a food source so I do think others are correct in that it sticks around in the substrate for a while.
Rating: 5 stars