Hey so I have a question I doubt anyone will know but worth a shot. I went to a professional fish store for them to test my salt water… he ended up telling me my phosphates are at 10.00 ppm??!! (100 gallon tank). Came home to test the phosphates with my api reef master test kit came back with a result of 1.0 ppm. Is there any way that he could’ve tested it wrong (professional saltwater store guy)? Or could the hour long ride there effect the results I’m really confused here. Tested 3 times and it’s 1.0ppm and expiration date is 2025.