oh gosh,, that pond we jut put together has the water level dropping dawn it I set the water level 1" below the opening of the skimmer. Was holding a good level for many hours, now it has been dropping and I suppose we have to do a process of elimination. I told the HO to shutt the pump down for a day after he fills it back up to determine if its the liner or in the falls ,,this is correct yes? We didnt use any foam on the waterfall stone,, we had a really good liner coverage coming up and over andto he sides within a horseshoe shape channel,,,was this wrong???