Each piece is approximately 3/8 inch. Since they are sourced from nature, they vary in size.
These small rocks are smooth, easy to clean, and attractive in my aquarium. They lay flat and have minimum grooves and crevices for food to get trapped in, or else is easily eaten by scavengers, snails, and plecostomus. After a quick rinse to make sure there's not any dust there were a great addition to my new tank. Would definitely recommend a new going to replace the gravel out of my other tanks since this stuff is so much better. I didn't encounter any small or broken pieces that would get clogged in my gravel vacuum like I've experienced with most gravel.
I searched high and low for the perfect gravel. I took a shot and ordered online because the picture they provided looked nice. I expected to not like as much as pictures are always better than the real thing... right? Boy was I wrong! It even prettier in person!
The reviewer that said the gravel is not actually black, but more of a muddy grey, is correct. That doesn't bother me. The reviewers who said the gravel is coated with an oily/waxy substance are correct. That wasn't much of a problem for me. My problem is that these stones are so large that food falls down between them where the fish can't get at it and no amount of gravel vacuuming ever really helps for long. And this even though I run a reverse-flow undergravel filter. I thought larger/smooth stones would be a good thing for corys but I am now looking for gravel to redo the tank with. There's probably some application that this gravel might be good for, but it's a giant failure as an aquarium substrate.
Per description and some feedback I bought this for my 20 gal. As I was rinsing/soaking it I noticed floating scum and residue on bowl. (Not dirt). I rinsed under hot water in a colander and as I turned the rock, I got black greasy residue all over my fingernails. So, I decided to boil some of the rock, sure enough a greasy / oil film floated out of rock. Now I have 40 lbs of rock I can’t use in my fish tank!!!
Love them they look great in my fish tank they are a nice size stone they make my other stones look awesome in my fish tank everyone comments how nice my tank looks with the stones
I bought 2 bags rinsed them repeatedly before putting in my turtle tank. 3 days now I am doing daily water changes. The water is beyond cloudy and reeks like fish. My whole house smells horrible. My tank has never been like this ever! Before I just had straight glass bottom few rocks but never covering the while thing. I had to change the water frequently because it would get murky and a little smelly. But now I cant stop the water from getting super cloudy and nasty. I have changed my filters every single day since putting the rocks in and they are just nasty every time. I have been threw 8 filters and it shows no sign of getting better. Super upset . This is right after 3rd water change. Water was crystal clear going in. Fresh filters and getting cloudier by the min. My turtle isn't even back in the tank yet.
These pebbles are shiny and smooth and look wonderful in the tank. They aren’t too small. Cleaned in bleach and the color wasn’t affected.
I Really like these I would buy again! nice size good color looks good
Priced right, great deal. Pebbles are dark grey as opposed to black but look great in our tank. Received item at the door in a few days!
Nice size pebbles verry nice color hopefuly the black polish don't come off and they are real black in color only time will tell