Good but... By RC on 7/6/2016
RC would recommend this product to a friend
I purchased the large block about a month and a half ago for use in my new sump for my 125g. I am in the process of building a custom stand/shelf unit, so it is taking longer than originally expected. The wife wanted to get a smaller tank up and running so she bought me a 24g nano. I set it up, and placed this in the back (sump) for added filtration prior to adding anything else (filtration. I am running carbon and foam filter block as well. Now, I take blame for my mistake as I forgot to soak like the directions expressed, I only rinsed it off for about 10 minutes. With that being said, we went out and got a couple clowns and some cleaner shrimp. Within 4 days, both clowns were dead, the shrimp are still good. I have tested the water and all parameters are well within safe limits. I verified this with three experts (people who have been in the reefing hobby for a long time. This is the only thing that I didn't follow the directions on and I love two fish. I am not sure if I will use this again or not, but if you follow the directions and soak it like it says, maybe you will have better results. The last part, this is VERY VERY fragile, and I have "rubbed" quiet a bit of this off adjusting it in the sump and pulling it out. It looks like a good product, but I am not happy with it (partially due to my own haste).
Perfect! By Deanna on 6/28/2016
Deanna would recommend this product to a friend
I wanted an alternative to having pounds and pounds of rock in my DT and this seems the perfect product. I am amazed at how lightweight it is, too. Thanks BRS for the wonderful job packing the box for shipping, everything arrived in perfect order.
Next Gen Product By Chris on 6/11/2016
Chris would recommend this product to a friend
First, buy it from a reputable dealer (like BRS). Rumor has it there is a cheap knock-off that has harmful elements. You can find video's about it on the YouTube...
Great material. I bought a 1" plate to replace my biomedia for my 5 gal nano. It is brittle, so cut it carefully or it will chip all over you. I used a sharp knife and steadily worked through the plate with the tip, worked well. First cut I chipped a bit b/c I went too quick. Later cuts were easy. If you do chip it, you can easy superglue it back together.
I will definitely be ordering more for use in QT and other tanks.
Never Again By Clement on 4/26/2016
Clement wouldn't recommend this product to a friend
I was really excited when I learned of this product. I started by ordering a couple of the plates and eventually orderd a bunch of the 2 inch cubes on amazon. I was lucky in that I started with the cubes in a non DT tank. I put them in a high flow area. WITHIN 2 hours my acropora went from happy to no polyps. A week later and everything was starting to STN. I can fairly pin the blame eon this product because when I introduced it I did not change anything else in the tank.... No water change, no carbon change.... nothing. To be fair I did no rinse the product before placing it onto my tank. However, it did not cause cloudiness. Putting this product in my tank is the worst mistake I have made in over 5 years. NEVER AGAIN.
Fragile By Gus on 4/8/2016
Gus would recommend this product to a friend
Marine Pure is a must if you have a sump. I was easily able to cut it to fit perfectly on my return chamber but is extremely fragile. I was placing it in the sump little debrie was coming and chips easily. still though great product.
Great product but breaks easily . By 120reefkeeper on 3/18/2016
120reefkeeper wouldn't recommend this product to a friend
I would have given this a better review but mine arrived broken. The product is very fragile. One of the corners had snapped off and instead of reporting it I chose to use it as is. If I were to but it again I would buy the bigger blocks. It is a great product and holds a ton of water , but it's very fragile.
Amazing surface area very porous By Jeffrey on 2/18/2016
Jeffrey would recommend this product to a friend
These are perfect for the minimalist aquascaper. I am not a huge fan of huge piles of rock in my tank but really like having the beneficial bacteria from live rock...Marinepure is a great substitute for live rock and you don't need 100's of pounds of rock to do what these can do with one or two plates.
Great product By Khamann on 2/12/2016
Khamann would recommend this product to a friend
Easy to use. Cuts easily to fit where ever you need it.
best porous material By best surface area on 2/3/2016
best surface area would recommend this product to a friend
by far has the most surface area out of any material i have ever seen on the market
Make them bigger By Mack on 2/1/2016
Mack would recommend this product to a friend
I have brought ever type except the small square ones! I plan to buy more for my predator tank! These diffently do what is advertised! I use these in combo with miracle mud and my skimmer run time is reduced to 6 hours a day!