Sealing small crack in tile

[UNDMac]

I have a spillway and one of the tiles has a small (hairline) crack that is allowing water to leak down and spill out of some of the stonework. Can I seal a crack like this with superglue or what?

Many thanks...

Bill

 

[Chuckiechan]

Try unsanded tile grout. Tile showrooms have a lot of colors to get you close.
Too bad you only are using 1/1000's of the bag...

 

[ajw22]

What type of tile? Glass? Ceramic?

Post a pic of the cracked tile so we can see your situation.