If I were u mate I’d buy the nutes u were using and just keep the other ones on the shelf for emergencies.
If it ain’t broken don’t fix it as the old saying goes
This is great thanks!!Im frugal when it comes to fertilizer.One option is alfalfa pellets,like what you feed rabbits horses.50 lb bag is $15 and lasts forever.Just hydrate and break them up.Instant alfalfa meal.breaks down quickly and provides a N boost.
Just an option.