It depends. You could go for a complete multi bottle recipe but itās expensive and common trap for growers to be exploited.
I used to have 12-13 different bottles but Iāve found that you donāt need it all. A good knowledge is better than anything.
But Iāll give you some options from budget to expensive.
I am only talking synthetic nutrients and growing in coco primarily.
Budget
Cal mag. Needed if in coco
Base nutrient: canna a&b is good value and can be used throughout
And pk13/14 by canna
Then you can add a biostimulant boost.
A root stimulator
Silica
Moving up you could have a base nutrient for veg and another for flower.
The pk boost could be 3 bottles. An early flower a mid flower and a late flower ripener
You can add vitamins.
Humic and fulvic acids.
Carbohydrates
Beneficial microbes
.
If you look at a nutrient company website at one of their feed charts and go through each product you will get a picture of what you COULD give them. Advanced nutrients is a company that has about 20 bottles in a recipe.
I strongly advise you donāt fall for their snake oils
I have had much better results since I backed off a few things. Nutrients and lights being the main ones