Test Kits: Salifert always have and always will use em'. Over a year now.
Last Readings: Alk 3.2 meq/L, Ca 345ppm, temp 78, salinity .025 (refractometer), trates >10, pH ??
Here is how I add: I put 1/4 tsp into 20oz. of RO water and drip in the mixture over about an hour. I alternate...