Just purchased a new home and I have a small waterfall feature in the front of my house, its probably about 10 gallons. I noticed it was losing water pretty fast. I did the bucket test and confirmed it was, outside bucket line was down 1/2 inch while inside was less than 1/4 inch. I tried to spot the leak using some red food coloring, but didn't see anything. Is there any other way to figure out where the leak is?
The waterfall is made of concrete.