Red Sea Fish Pharm ARE21425 Saltwater Phosphate Pro Test Kit for Aquarium, 100 Tests

I like Red Sea test kits. They are 2nd to Hanna digital tests imo. But it’s really disappointing when you order this 100 tests PO4 kit online and it expires in October this year?! Even if you test weekly it’s only 52 weeks in a year. Not worth it to return and repurchase elsewhere but I know I won’t be ordering it online again. They should try to make sure it has at least 2-years left before expiring when selecting these for online customers. I’ll stick to my LFS from now on even if it costs a little more.

Product is great, very easy to use and to identify colors. Other products I've used to test phosphate are very tough to read the colors and identify how much phosphate is in the water. The reason I give this three stars is the packaging from both red sea and amazon is not done very well. The bottles could be packed tighter in the red sea container and the amazon box could also be packed tighter with more paper. When I received my product their was some liquid in the red sea container (not much) but enough to pretty much ruin the color disk that you use to identify the color corresponding to ppm value. It is still useable but very hard to read colors.

Just received this RedSea Phosphate test kit today and the kit expires 09/23. I would never use 100 tests before it expires so this is of no use to me.

Have to say I'm very disappointed with this test set. For 2 weeks I was showing .08ppm on a system that had carbon dosing and running GFO. Because of Red Sea's reputation I looked at everything else before I even considered that my test kit might be bad. Sure enough when I explained my situation to my local shop I was told to try another kit. Then when I did the research I found that this is a known issue with the Red Sea PO4 kit. Any level of PO4 under .08 will read .08 every time. Picked up a Salifert test kit and also pulled out my left over API test kit and both showed 0ppm. Just so you know I LOVE LOVE LOVE LOVE Red Sea stuff. This kit is the first dud I've experienced from them. I'm sure sooner or later they'll get it figured out, but until then, do yourself a favor and pick up the Salifert PO4 test kit.

Color chart is very hard to read since the colors are so close but then again most test kits have the same issue. Other than that its a very nice Pro Kit and I use it often.