I just noticed for the past 2 weeks or so there are 2 very small moist spots on the concrete deck around the pool, the spots are about 1/2 inch in diameter, do not seem to get bigger, they are just slightly moist but not wet, there are no cracks on the concrete, I don't know if there is a leak in the pipes, I do not seem to be loosing water or chemicals, I do have an automatic leveller, if there was a leak, fresh water will be added automatically and my salt level will come down, but that is not the case. The deck was poured about 10 months ago. I also have sprinkler pipes in the same vincinity. I am trying to find out if there is a leak in the sprinkler system. I can't think of any other reasons. Anyone has any ideas?