Review on 💎 Royal Imports Glass Flat Marbles Stones Rocks - Premium Blue Vase Filler Gems for Weddings, Parties, Aquariums, and Centerpieces - 5lbs Bag (500 pcs) by Angela Rodriguez

I bought these red stones for our small fish tank. I've been using it for almost 4 months now. I've noticed that our fish have become lethargic lately. This is a young fish that used to be very active. When I cleaned the aquarium and washed off the pebbles, the red tint literally disappeared. I have a feeling these stones were toxic to my fish. They are great for decoration but don't get wet! Update: My fish have died after using these stones in their tank.