I emailed AN and asked "When using your nutrient calculator for soil grows, should I enter the total amount of water I plan to use over a week's time in the reservoir size, or should I use the amount of water I use for each watering?" They replied "The amount to use in the reservoir is the amount of water to be applied per watering, not for the whole week. Although the nutrients should be applied at the full strength only once a week." I read a reply that they sent someone else that states "The amount suggested in the nutrient calculator are the total nutrients to feed the plant for a whole week, not the amount to give them per feeding." This seems to conflict with their response to my question as the total amount of nutrients suggested in the calculator changes as you change the reservoir size. Can someone that uses AN tell me which is correct?