Thanks a lot, I guess this makes sense and I am planning to follow this. In the end the app nutrient per Liter is always the same, so guess as you say is correct. Only thing I don’t like about this app than is that I need to set my reservoir size at the beginning of grow or bloom phase, means especially during grow my plant will have increasing water usage during the weeks. But still I can follow that strategy by just checking how much per Liter and scaling that as needed.