We have Lumi-O steps and they already have several holes already drilled in each side. I do not recommend adding a puck in the steps as it can bleach your liner! Trust me on that Lumi-o had it listed as a recommendation in their instructions and that is why I did it. Steps also have a 2" hole in the top of the 2nd step for placing a hose when adding water to your pool. This I do recommend as it does circulate water through the steps. I do get debris that settles in the steps as someone mentioned but no algae. The two things that I do and so far have been successful with are; add 4 Oz's of poly 60 over my steps every Sunday and as often as possible before getting out of the pool I would around the perimeter for a couple laps to get a good old fashion whirlpool going. Not only does it circulate the water past the steps but it is great exercise as well