We've had a few people tell us that the bubbles we are seeing on the surface of our spa (none in the pool) when the pump is running is caused by a leak. We've done a bunch of investigating around the pump to test for a leak and either we are doing it wrong or it's worse than we think (underground), or these people are just crazy.
It only occurs when I have the pump on high speed and I vaguely remember growing up and having my Dad's spa do the same thing (no pool).
Does this sound (look) like a probable leak to any of ya'll?
Thanks in advance -