MEIMEI 100 Pcs Aquarium Tank Mineral Balls,Fish Tourmaline Balls Accessories Freshwater Aquarium Rocks,Live Shrimp Betta Fish Crayfish Food

I added these to my aquarium to help keep good bacteria while doing water changes. The size is small around the diameter of a marble but when added they give a nice appearance if you spread them out along the plants and gravel. They were clean not dusty so they were ready to drop in. Very good quality for the price. These would make a good addition to any aquarium, and should help stabilize your tank.

Only thing stopped me from a 5 is that my bag inside the box was busted open and they were all over rolling around 🙄 and we'll, CLEARLY the bag was broken open before packing since there was nothing in the box that could have been the cause

They didn't look great in the tank but just having them in the filter has helped with water parameters and the snails look great

Perfect for my 5 gallon tank, my shrimps and snails love it. I put a few in each of my 4 fish tanks and seems to help my shrimps 💜. I was expecting these to be a bit bigger but this totally works

It came with an extra gift

Didn't make a difference either way

My shrimp did nothing with these crawl over it like it’s not there, what a waste of cash I truly wish just for once a product would work as claimed sooo annoying !!! I don’t recommend this product

Didn't even cover half my nano, just looks like the surface of my bowl of cereal when i try to eat the last ones. The guppys are playing soccer with them now..... Ok imagine you at the marble Olympics these things would be in the micro league.