Attention Fish Parents: Do not buy these rocks if you want your fish to live. I recently purchased these rocks to replace the old ones in my tank. In my tank I have four goldfish and an albino bristlenose pleco. My fish have been used to the water changes I do and have always been fine after I’ve done it. When I was switching out the rocks I also did a water change. Unfortunately less than 24 hours after, all my fish were dead. Normally they are fine with the water changes and are pretty hardy fish. If my one fish can survive jumping out of the tank he can handle a little water change. The only difference I could after the water change was the new rocks. After reading reviews of this product, which I wish I would’ve done sooner, I realized that other people have gone through the same problems as I have. So to protect your fish please do not purchase these rocks!!

Never received my order/ never received any customer service no response from my emails

Do NOT use this for Frogs! It killed our green frog when she accidentally ate one. A Petco employee recommended this substrate to us when they sold us a kit for the frog. Worse mistake we ever made for our frog.

Relatively cheap. Gets the job done and looks good too.

2 days since I purchased my betta and set up the tank already have algae and floating gravel on the top of my tank its horrible

Added Frosted Black, to an existing tank. Did not remove the older black gravel, just added, so I did not disturb the beneficial bacteria. Within Hours, Kuhli loaches, started dying, lost guppies also. Did a water change, added an airstone. More death, another water change, as all fish were still barely moving and staying at the surface, not eating. Day 3 more death, but slowing down, another water change. I have kept fish for over 50 years, tank had been estabilished for more than 20 years. All testing was normal, no change in ph. But the surface tension was really thick, basically starving the fish of oxygen. Never had this happen before, but after researching this, many others have had a problem with the black gravel, Imagitarium brand.

I bought 2 bags of the "Shallow Creek" gravel, and I am very satisfied. Colors ranged from slightly off white to grey, with a nice range of light brown and cream colored stones. It is much coarsar than the colored products, but that's not an issue for me. I am running an undergravel filter as well, and it appears to be very good for that purpose. I have not experienced any aquarium deaths that I could link to the gravel, nor does it appear to cause cloudy or murky water. It might be that the more natural gravel isn't coated the same way. I wish it had been darker, but it is in all other ways fine.

The black gravel is perfect for my needs as the edges are fairly rounded and gentle on my fish and the look is sleek. My fish also prefer the darker gravel because lighter substrate makes them feel exposed. I didn’t even wash the gravel before using and the water was crystal clear.