Your welcome, you have solved one problem, but as for the right answer, it might vary from one circumstance to another. On my Sundance Majesta I filled up just above the neck jets in the corner seat. (nobody in the tub) Its just a hair too deep for my wife, so I backed it down a 1/2". Its perfect for us, but when nobody is in the tub the neck jets are above the water line and spray all over the place when I'm adding chemicals. Now I turn those jets in the corner seats off, till we need them. When people (my wife and I) are in the tub its not a problem.