All of them are easy plants and dont really NEED anything. But it will help, as islandgaliam said root tabs would be good for the swords and vals, unless you have a plant substrate (flourite, eco complete, flora max). So would potassium (made be seachem), i usually see a lot of potassium problems with swords. For the hornwort, it doesnt form roots, so make sure you dont bury it, it will rot that way. But since it feeds off of the water column, get flourish comprehensive. You can also get flourish excel and iron they will help a lot, but not a necessity. The other three you dont really need, nitrogen (have fish in the tank), phosphorus (well water usually has a lot of it. I dont know about city), and trace (i used it once, not a huge fan, so im not going to recommend it). Hope this helps.
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