Salifert is having issues with the accuracy of their ALK kits, right now they are sending their kits out with reference solutions to make sure the kits are not bad. I use Salifert for all my testing but I also run checks with API ALK kit to compare. My salifert were reading 11.2 DKH with 3 different kits, but API was reading 7 DKH and sometimes 6. After a month of this my coraline was declining and I lost a couple of corals I contacted Salifert, ever since I've been using the API and the tank is rebounding nicely. API test kits use very good reagent, so for the money you are getting a good kit with API Alk, I can only speak for this kit not the others. Only downfall to API is it only shows you in 1 DKH increments and salifert with show you to the tenths, but for quick generalized tested my money is on API. |