8 Pcs Pools Pumice Stone - Pool Cleaning Block Swimming Pumice Pool Tile Stone for Pools & Spa Tile, Grout & Concrete Cleaning (8Pcs)

I was getting a lot of calcium buildup around the edge of my pool. I liked these because they came in different sizes. It was nice to have some smaller ones to get into some of the tighter spaces.

Used one of the larger blocks and it was completely worn down after cleaning approximately 70 feet of single top tile at water line. Much to soft, going to check out what the pool supply companies have to offer. My other pumice stone lasted two years, this was maybe 25 minutes.

Worked well

Product is ok but since the product came in envelope 2 pcs were cracked in half. This product should be put in a box to better protect it.

I have random calcium build up spots on the tile in the pool - this is so helpful to remove - just have to be diligent and use a bit of "elbow grease"

This is packaged in a bag and sent in a bag. Most pieces were broken into small pieces when it arrived. When I tried using it on the pool tile the piece disintegrated completely just trying to clean a few tiles.

These puma stones are far too soft to take off deposits from pool tile. May be appropriate for porcelain toilets and sinks, but definitely not for pools.

We used these to clean up calcium deposits on our pool tiles. They did work well with some "elbow grease". I guess this is a normal thing, but these disintegrate very quickly while using them. Just know that going in. The main thing is that they did clean up our tiles.