We purchased the Blue Wave Pool Stairs two years ago and I suspect they are the culprit when it comes to my ongoing algae issues. I test daily with a Taylor test kit, shock regularly, keep my chlorine well above recommended levels (based on my CYA using the Pool Math calculator), use a good algaecide, brush the walls and floor, and have tried using a power wash hose connection to spray behind the ladder. We also drilled multiple holes in the ladder before this season trying to improve circulation.
Despite these efforts, I continued to find algae on the stairs and around the pool on a regular basis. I suspect the the sand inside the ladder constantly harbors algae and is the source of the problem - but what can you do about that? We pulled the ladder out a couple days ago and found tons of algae on the backside of it and dark green water flowed from the inside. (see pic)
You can't drill holes in the sides where the sand resides, or the sand would come out. Any suggestions for how to handle this? I am about to ask for a refund. I have contacted the company on multiple occasions and they do not have any useful suggestions. I wanted the stairs instead of a ladder in case one of our dogs got in the pool (labs - they kind of love the pool).
Thanks for any advice you can offer,
Kelly ok, not sure if pic uploaded... imagine lots of algae covering back of previously white pool stairs
CYA 35, Free Cl stays between 6-12, pH 7.4
pool stairs algae.jpg