Review on Highly Efficient Seachem Purigen for Freshwater & Saltwater Filtration by Elizabeth Carey

This is a warning to test the product before use. If you are new to this item, please watch the unboxing video first to familiarize yourself and save yourself the headache of fraudulent items. I received opened individual packages (the opening was discreet, I didn't notice that at first) marked "New". I didn't think much about it until I put it in my tank and immediately killed some shrimp, the whole tank turned white. what a mess. I could lose all residents in my 3 year old tank. I think the ones I got were used and refurbished or something, but they definitely weren't new. This should tell me if the package wasn't in the sealed bag. The items came from Monster Pets. What a disappointment.