I have an ingroud pool made by Club Piscine. Since some time I am loosing water and its pretty consistent. After many efforts and money spent, I have found with stupefaction how bad this pool has been made. Their lack of knowledge or the desire to save material ended-up in short return lines that bend against the polls and cracking after few years. The photos attached are pretty self explanatory. I have found already 3 places like this after digging under the sidewalk of the pool. Think twice!