You're doing it right, it's total ppm you want.. using distilled water to mix nutes iß best because you can squeeze the most ppm into it without being too salty.. also in late vegi target 900-1000 ppm at a pH of 5.8.. to get them used to a saltier solution.. in flower it's 1000 ppm target to start and in week 3 I jump to 1200 ppm +/-. pH of 5.5. They love it.. . In soil id work with a slightly higher pH. More 5.7-6.0 in flower.. cheers! Keep it Green! DWCHC 👈 👍