I'm so poor that I never go anywhere for a week

:lol: .
But if I did plan on being away for that length of time, I'd do a
large water change and dose as usual. I normally dose twice
a week, but would have to skip the mid-week in this case.
Then, on return, another large water change and dose again.
Then back to the normal schedule.
For a 2 weeker, I wouldn't 'blast' it. Plants have an enormous
capacity to store nutrients and would probably be fine for a couple
of weeks.
For that matter, the fish would probably do OK for a couple of weeks
as well. No, I'm not hard-hearted.......I'd just rather they go on a
bit of a diet than trust anyone to dump huge amounts of food in on them.
Len