Hello i have the red sea pro salt. I had a quick question on mixing. How much salt should i add to ro water? Like how much salt mix per gallon of water or 5 gallon bucket? I have just been testing after heaps added until im at 1.026/25 . I have a precise scale that can weigh in gram up to 30 lbs . Dry weight or volume would be a help for those water changes instead of eyeballing and retesting