Have a new bright wonders 6 ft led sheer descent. I noticed that after it is off, even a few days out it leaks down onto the stone wall. Also noticed the concrete blocks on the back seem to be wet as well. When I operate it I noticed along the bottom of the unit there is dripping water down. The waterfall seems fine and even. The secure were taken after about 5 days of not using it. It is on a 2.7 variable speed pump. Please provide any advice you have. Builder says it’s a closed system and no way it is leaking. The pump for this is all the way on the right.