Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
One method of dosing calls for dosing daily, but alternating what you dose:
3 days per week (mon-wed-fri, perhaps) dose N, P and K
3 days per week (tue-thu-sat perhaps) dose micro nutrients.
Dosing that often, you would not need to dose very much at any one time.
There is no problem in dosing the whole week's supply on one day, I would simply dose N, P, and K on one day, and micros the next to avoid the precipitation mentioned above.
There is no specific time of day to dose these.
I understand Excel breaks down over time, thus the suggestion that morning is better than evening to dose this. Only a suggestion, though. Dose whenever is best for you so you keep on a regular schedule is better than trying to meet an impossible schedule and skipping the dosing.