With my base water at 90 ppm & 7 ml of cns-17 coco & soil Bloom formula gives me 510 ppm, just mixed a fresh batch and checked it. And I think you're looking at it as I'm saving more money on nutrients but in reality I'm not because if I was running the same size pots I would be feeding 3-4 times a day. Each of my 9liter pots takes 8-10 gallons a week of nutrient solution, I do 12 in a 4x4 under a 600 and have another 12 in another 4x4 as a monthly cycle. So yes if I my plants grow happily with that strength of nutrients and still yeid me .8 to 1.2 grams per watt. I'm happy.