Way too fragile. By Doc on 10/1/2016
Doc wouldn't recommend this product to a friend
I purchased a block to live in my sump. I have a 180 mixed reef and a 75 gallon custom sump. I can see how the product has a large surface area and would support lots of bacteria but the block I purchased was loosing material and the bag was full of fines. The product has little structural integrity kind of like a sand castle. I was expecting something solid. For the price one would be better off buying a bunch of dry live rock. This stuff is way overpriced. I wonder if it will erode down to nothing.
don't see why it wouldn't work By Ryan on 9/22/2016
Ryan would recommend this product to a friend
this has been in my tank for about 2 weeks, I bought the 8x8x1 block and have a 60G tank. its really light when you first get it but once you rinse it you can see how much water it hold. so far so good.
Arrived in great shape By Tim on 9/15/2016
Tim would recommend this product to a friend
Will definitely order again
great product best customer service By hazmattec on 8/31/2016
hazmattec would recommend this product to a friend
product looks great just getting tank and sump set up so hopefully it works as good. had issue with first one customer service took care of issue with no questions.
Appears to work By Greg on 8/22/2016
Greg wouldn't recommend this product to a friend
VERY porous, very brittle also, so handle carefully. Mine came fairly intact, and was packaged well. Either it works really well, or my bio pellets finally kicked in, but my nitrates went from 15 to two in about a month. Great item for a sump, could be custom cut if needed.
Great By John on 8/3/2016
John wouldn't recommend this product to a friend
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.