Legends didnt make it,
Prochem did. Legends just bought Prochem.
Anyway the pictures of the waste tank look like it hasnt been cleaned properly for awhile. As Lee said, there are holes in the two baffles between where the waste water comes into the waste tank to where the blower filter is. They are located near the top of the baffle. On each end of the tank there are *flaps* that cover these holes so you cant see them and you need to get a nozzle underneath the *flap* to clean. If you look at the baffles from the middle access panel you should be able to see the holes on each side. They are near the top of the baffle. These allow air to flow throughout the waste tank without drawing water up from the bottom. Dime to a dollar they just need to be cleaned out. Problem solved.
Dont make it any more complicated than it really is.
And clean that waste tank