The first fountain we purchased had a noisy pump (even after adjustments as described in the documentation), and one set of LED lights stopped working after just a few days.  Wayfair was very helpful in getting a replacement unit.  After 4 months (the item was out of stock), the replacement fountain arrived.  Pump worked well and the LED lights were fine.  However, the fountain had a slow leak/seep from the bottom.  I had to take the pump, tubing, wiring and lights from the new unit and install them into the old fountain body to finally create a functioning unit.  We like the final product, but quality control leaves much to be desired.