Need more info, are you speaking of alaska ferts??? if so it works pretty good but no you shouldent fertilize right from seedling you should wate like a month or until the seedling leaves fall off. also you don't need to fertilise every time you water I fertilise about once a week some times more.
I have used alaska fish emulations every watering for over a month before and nothin bad happened, but never for an entire season.
If I were you I would do my usiual on most of crop then on a few or maby even one do ferts every watering and see what happens.