Now I am just waiting for it to dry.
I used a lot more grout on the bottom because that is where the water feature will run out. Now here are the pics!
Here is the background after a little carving.
The start of grouting.
I put in a piece of 1/2" CPVC pipe that runs out the back, that the water pump will hookup to.
I then cut up a straw and placed it along the front. then I put grout over them.
Once the grout was firm I removed the straws, which left a nice opening for the water to flow, and completely hiding the pipe.
Were it is with all the grout done, (it is still a little green) and the second one is for the other wall.
Should I seal the lower grout were the water runs, or is it okay?