Whats the best stuff to feed plants that are growing in pots?

Cant go far wrong with ionics soil grow for vegging . Then onto ionics soil bloom. Then i use ionics boost at the tail end of flowering. Depends on what kind of soil you using too, alot of compost has slow release nutes so in theory you could get away with whats in your compost, from start to finish. But personally i would still feed them.