Now I’m convinced my phosphate checker is broke. I measure during the day and my readings are 0. I measure at night and I get some sort of reading.
My buddy says these tests are done with the presence of light. I’ve tried bright light. I’ve tried medium light. I’ve tried just ambient light in the day and readings are still 0. I try at night with just dining room lights on and I get a reading.
My buddy says these tests are done with the presence of light. I’ve tried bright light. I’ve tried medium light. I’ve tried just ambient light in the day and readings are still 0. I try at night with just dining room lights on and I get a reading.