Tile/Grout Calcium Remover

[Cayman]

We have 3 waterfalls in our pool and the wind notoriously blows the water on the tile wall. While I know this happens because my CSI is a little too high at times, but what is the best thing to removed this calcium from the tile and grout? I have tried some tools in the past, but nothing that I had purchased ever worked very well, so I thought you all would know.

Thank you.

 

[jimbethesda]

I use diluted muriatic acid.

 

[Cayman]

I use diluted muriatic acid.

What concentration? I used 50/50 with pretty good results but it seems that it wears slightly at the grout.

 

[jimbethesda]

What concentration? I used 50/50 with pretty good results but it seems that it wears slightly at the grout.

I'm not very scientific about it. I pour some water in a bucket, then pour some acid. If that works, great, if not, I add a little more acid.