I have never replaced the gasket... I don't know how to do that yet.

I do have a pool guy coming to look at the lights at 6, I will see if he has a gasket with him or something.

Great idea about moving the drain hose to the pool and using Waste. I will try that! The stains are lighter and the sidewalls are streaky right now with the pump off. I'm hoping by getting some circulation going that these stains will disappear.

Thanks for your help.