Stone for Aquariums, Medium - Natural Water Clarifier and Odor Remover, Treats 15 to 40 Gallons

The media could not be loaded. Before and after pics and video! I am new to the aquarium hobby. I have a 75 gl tank with a few Koi fish and Plecos. After about a month my tank starting a bacterial bloom, was cloudy, and needed frequent water changes. I saw this product at Petco and thought what the heck I’ll try out after I researched it. All the reviews were glowing here on Amazon, internet and on YouTube and every tank that had one of these cleared up quick. I decided to buy this medium one as I had bought the small and wanted to see what it would do. I didn’t want and substrate in my tank just for cleanliness. Literally about a week later I get home from work after 2 partial water changes both days before and my tank was crystal clear!!!! Prior to this I had a 40 gallon tank and had tons of problems with water changes and my fish dying but I was determined to get this right to enjoy fish keeping. I spoke to a local aquarium store owner and he talked me through everything such as a larger tank not being as hard as a smaller one and that the concentration of water in a smaller one is just bad because if one fish gets sick they spread it fast to the others faster. He did not mention this product I just decided to try it and boy am I glad I did!!! My water and my fish are thriving. I check my water levels daily and test the water. Since putting this stone in it’s stayed consistently the same. If you’re having trouble with a tank TRY THIS you’ll be impressed. I know for koi I need a bigger tank and that is the plan or an outdoor pond.. Also take the package advise and soak for the 24 hours in non chlorinated waters. It has some bubbles that will discharge from the stone and small particles that the soaking process will clean this off of it. This will help to stop you from transferring the particles to your fishes home. I’m thrilled I tried this project.

I do weekly 50% water changes and monthly fx4 filter cleanings. I have tried 3 different products to get rid of the cloudiness, I was beginning to think it was the aquarium glass.Followed the instructions to soak for 24 hrs, then I set two stones in the aquarium. Six days later the water is 95% cleared! So easy and with the color of the stones, they blend right in with the sand bottom.

I use this in a 55 gallon aquarium with goldfish and snails. After soaking the stone, then placing it in the aquarium, it takes a few days to see a difference in the water, but it works. It also seems to provide calcium for the snails as I found a noticeable difference for the better in shell quality after adding this to my tank. Yes, there is some residue that appeared on my glass after the rock was placed in the tank, but I was able to wipe that away and it did not return. The rock is also extremely large, not very attractive, and difficult to hide in my aquascaping. Due to the size of my tank, they recommend having two of these in my tank, but that just won’t work with my set up (it would take up too much space and be an eye sore). The packaging says these last 1-2 years, but I found one in my 55 gallon tank lasted about 5 months. So, I give it 4 stars because it works and the benefits are worth having one in the tank, but it’s ugly and oversized.

Honestly thought I was going to get a small rock. It's pretty good in size. Well worth the money. I was not paying 40-50 dollars for a stone. My tank is clear already but I still get a smell and hope that this will help with that. The smell is fishy and only smell it once in a while.

This doesn’t work! I’ve have it over 4weeks and my water isn’t clear at all. On the box it says 120 satisfaction guarantee but when I went to return this product it’s saying I can’t anymore. Doesn’t even give me the option. I bought 2 of these things. What a waste of money.

I bought it and it made more of a mess than my turtle. It crumbles and leaves debris everywhere on bottom of tank, read it had to be by flowing water so i put near the filter and NOPE .just made water cloudy and particles everywhere...So had to change out the water and i set it aside in the tank (no clue why i even put if back in there after having to clean the whole tank because of it) my turtle started pushing it under his basking platform ..and fell asleep on top of it...he uses it as a bed now lol so as long as he's happy and uses it for something i suppose its not a complete waste of money