Review on Aquatic Arts FilterPlus: Enhance Your Aquarium Canister Filter with 400g Bio Media Upgrade Bag/Pouch for Effective Tank Filtration by Chris Byers

Amazing! I have been dealing with cloudy/smelly water in a turtle tank for over a year. I've tried many different filter media and have enough filters to clean over 100 gallons - I only have a 40 gallon tank. This product works as advertised! When the "rocks" arrived, I soaked them in aquarium water for two hours. I then replaced the current filter material with these stones. A day later the water was still cloudy (I'm an impatient person) so I did a 100% water change. I have had crystal clear water in my pool for 3 days now! With other products, the water was cloudy/smelly the next day. I could save so many dollars if I found this product first!