Beginner Hydro Setup - Do I have what I need here on the list?

Based on my space and plants I’m trying to grow, im probably going to go with (6) 5-gallon buckets for my setup instead of a tower.

1. What nutrients should I buy?

- I want to do watermelon, zucchini, tomatoes,

Strawberries, jalapeños, squash, rosemary, basil, cilantro. Do I need different nutrients or can I use the same thing for all of them?

2. Using food safe black buckets to help prevent algae buildup. Getting lids with pour tops for nutrients and adding water

3. Fish tank Aerator - 1 unit per 2 buckets

4. Do I install the net cups into lids or a piece of floating material?

What am I missing?