Review on 🪨 5 lb Bulk Bag of Black Pebbles – Ideal for Plants, Aquariums, Fish Tanks – 1"-1.5" Garden Stone Decor, Natural River Rocks – Polished & Decorative by Kimberly Allen

These stones were bought for my aquarium. I tried cleaning them before putting them in the tank. When using warm water, I felt the stones felt residuey. I switched to hot water and the wax melted. It was very rough, like an oil slick on the coast. It took a lot of soaking to get the wax off. The stones are now showing their true color: dull gray. The stones looked great black and shiny but I don't want my fish exposed to whatever is coating the stones so the cleaner the better. As for the veracity of the listing, I'm not happy that I don't have actual polished black stones for my aquarium.