i would not be concerned. You are only marginally outside of optimal range and chasing perfect redfield ratio can sometimes result in unintended consequences with your biome (like once you start, you can’t stop). Unless you are trying to get competition-level color out of tricky acroporas, your phosphate level is fine. Just keep up with water changes and don’t let it get any higher. If you do really want to get it lower, as others suggested, dosing a nitrate source would be great at your levels. Shoot for 10 ppm nitrate and your phosphate will likely come down a bit on its own. Just be prepared to make nitrate dosing a permanent part of your upkeep if you do.