Tap the icon of the box you need in the box bar at the top - the box card opens. If the box was not active, the first tap only makes it active: tap again.
Pick the solution in the «Solution» field: the list holds only the solutions from the catalogue.
There is NO screen or menu item called «box settings» in the app. The solution is changed in the box card, and that card is opened by tapping the icon of the ALREADY ACTIVE box. The second tap is only needed when the box was not active before.
Changing the solution together with a new fill date opens a new working period of the mix; changing only the solution without changing the date edits the current period.
Clearing the solution of a box means draining it, and the drain date is set at that moment.
«Drain date cannot be earlier than the fill date» - the drain date is earlier than the fill date. Check both dates.
«Fill date cannot be earlier than the previous fill in this box» - the new fill is dated earlier than the previous one in the same box. The history of fills goes in order.
«Fill date cannot be earlier than the previous solution drain» - the new fill is dated earlier than the drain of the previous solution. Drain the old one first.
«Fill date cannot be later than the earliest measurement of the period» - the fill date is later than the earliest measurement of this period: a measurement cannot be taken before the fill.
«A drained period cannot be edited» - the period has already been drained and cannot be edited. A drained period is closed history.
«Solution period not found» - the solution period has been deleted or has not been created yet. Refresh the page.
«Solution not found» - the solution has been removed from the catalogue. Pick another one.