6 Eco Bricks - Aquarium Decor Stones - 100% Natural Lava Rocks

These are really cool and functional little aquarium decorations. First, when I say little, they are tiny! I expected 3" cubes but they are half that size! Turns out the measurements were in cm instead of inches, as the company that sells them is in Germany. So I was a little surprised at their size. No problem! I bought two orders. so with the 12 lava rock cubes, I built a tumbling wall in my shrimp tank. As the tank is a nano aquarium and quite small 2gl, these tiny blocks fit perfectly, and look awesome! So my surprise at the size turned out to be a plus. I always put lava rock in my tanks because of the structure for the beneficial bacteria to grow on, and these just ad a neat shape to the mix. They are a little pricey, again considering the size, but they are unique looking in a tank setting and functional. The shipping was prompt, it took each order about 10 days from the date of shipment to reach me. Very happy with this purchase and the look of the product in my tank.

These got here WAY quicker then expected, ordered them July 11th and received them yesterday, the 20th. They're little, but I love it because they don't look like just a giant rock in a tank out of place. I can already see a little difference with the clarity of my water, but will update more in the future when the rocks hopefully really make a difference! I have 11 bettas, 7 in a sorority with a community, so these are a big deal for me!

Did NOTHING - three are now lost somewhere in the substrate, I'll have to dig them out (again). Way overpriced for something that does nothing to help the fish's water nor are they even particularly cool to look at. They don't "stack" in the water - not if you have any fish in the tank anyway. Big waste of money.

These look great in my tank and seems to do their job. As a bonus, my shrimp love them!

Much smaller than expected. Could almost fit all six in the palm of my hand with room to spare.

The bricks are great and my shrimp seem to enjoy them. My only negative was the long wait for their arrival. So do not expect fast turn over from the day you Oder to day of delivery. Product wise very pleased.

These really work!!!! the water is so clear that, I could drink it😳💯👍🏽. I will be buying more of these in the future😁

Bought two boxes and it was worth the investment. Keeps my tank water crystal clear. Got my product within a week. A must buy for aquarium enthusiasts!