Review on Two Little Fishies ATL44022 Aquastik by Katrina Davis

Good stuff. My recommendation is that you knead it longer than I did the first few times. It comes with a green puddy stick and a purple one. The longer you knead it, the faster it hardens, turning a dark purple color that looks more like coralline algae than a clump of puddles in your aquarium. Reusable container so you can cut what you need without worrying about it drying out. It breaks down a bit, meaning it'll fog the saltwater slightly, but a protein skimmer will do it all pretty quickly.