I have the Blue Square in floor pop-ups with I believe to be the full flow nozzles, but a few of them are too close to the side walls and are causing excessive calcium build-up due to splashing and the evaporation. I’m thinking about changing the nozzles in those locations on a step and baja shelf. The first problem is the pool builder never left me the other size nozzles. Any idea where to buy just the nozzles, how do I best determine which nozzles to use?
It’s not likely the nozzle size will help – but the positioning of the jets themselves. Make sure water chemistry is spot on, and the best option at this point may be to remediate any build up you do experience. You could leave jets out of those, but you’ll be changing the back pressure on the system and it may have a harder time getting through the zones properly, but that is something else you could try.