Thanks for the reply. It's a strange situation. I used some kind of underwater epoxy on the cracks of the steps - They are permanent. I can find out the name if you need, I have more of it. I definitely need a new liner, it's like swiss cheese. I spend a lot of time with my scuba tank putting patches over holes all over the place.

I believe i'm dealing with a mustard algae and it's found refuge behind my light and I think on the back side of the vinyl steps. I've been keeping the thing going with duct tape and chewing gum for several years now knowing that everything needs to be replaced - I'm just waiting for something to happen that I can't fix or rig. It will happen soon. Thanks