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I need to replace the sealer in my expansion joint between the pool concrete deck and the brick coping. However, there has been either some letting of the coping or some sinking of the concrete decking. It's not enough to cause major reconstruction or concrete jacking maneuvers but in some...

I have a Raypak 206 heater and it is making an annoying howling whining sound. I have checked the heat exchange tubes and they are clear. If I open the intake valve to suck from both the skimmer and the bottom drain the noise stops. However when I am just filtering the hot tub there is only...