I would omit plants that are too much alike.
Vals and most Sagitaria for example, tend to look about the same, unless you allow the Sag to grow into its emersed state. Val gigantea needs a larger tank, so use the Sag.
Stem plants with fine leaves tend to look too similar to each other. Choose perhaps a red one and a green one. And make sure they stay small enough, or look good when trimmed.
Swords and many Anubias can get quite large. Are these small enough to have both in one tank? Might be too much for just a 30 gallon. Choose one. Center piece. Anubias of course grows on the driftwood.
Cordyline are not under water plants. OK to grow out of the top of the tank, roots in water, stem and leaves in the air. Needs support to stay upright.
Vals and most Sagitaria for example, tend to look about the same, unless you allow the Sag to grow into its emersed state. Val gigantea needs a larger tank, so use the Sag.
Stem plants with fine leaves tend to look too similar to each other. Choose perhaps a red one and a green one. And make sure they stay small enough, or look good when trimmed.
Swords and many Anubias can get quite large. Are these small enough to have both in one tank? Might be too much for just a 30 gallon. Choose one. Center piece. Anubias of course grows on the driftwood.
Cordyline are not under water plants. OK to grow out of the top of the tank, roots in water, stem and leaves in the air. Needs support to stay upright.