Red Sea vs Hanna Low Range Phosphate Test Kit Review 

I show two of the most common test kits used in the saltwater aquarium hobby. I run a test on both of them and compare results. Based on my finding I explain why I would not recommend the Red Sea Phosphate Pro (PO4) test kit. I also explain how if you are using it, you may be having issues with your tank because of it. I also explain why I would recommend the Phosphate Ultra Low Range PPM Colorimeter HI774 Hanna Checker - Marine Water. Lastly I show how you can use HI774-11 Phosphate Ultra Low Checker® HC Calibration Check Set to make sure that your Hanna Instrument is calibrated and reading correctly.