If you’re happy with your harvest, just keep using what’s been working for you. If there’s something specific you want to address/improve with your grow, then let us know and some of the more experienced growers can point you in the right direction. You can also search “nutrients” in the search bar and sift through older posts.
Generally speaking, everyone advises keeping it simple to start. Hydroguard & Recharge should have you covered and if your plants experience stress and you want to help it recover, Revive is recommended (disclaimer: I haven’t had to try it for myself yet, it’s just been repeated all over the forum lol)