my 30 gallon

I think the bushy, lush nature of Heteranthera zosterifolia would make it an excellent replacement for the leggier Hygrophila polysperma.

Personally, I would remove the large circular green mass on the right side or push it back a little.

The driftwood branch on the left side needs to go or needs some other pieces to complement it. Right now, it's just a solitary element with no cohesion to the rest of your layout.

Keep us updated. You have a nice tank. I see the Dutch influence/street in your tank -- and I really like to see that sort of technique being used!

Carlos

A beautiful, healthy planted aquarium. The midground is a little weak though, so you may want to work on that. Two ways (there are more, some yet to be imagined) of creating depth and strengthening the midground at the same time:

Use of driftwood/hardscape to make the connection between the foreground and background (Nature Aquarium).

Use of plant streets, such as Lobelia cardinalis or Saururus cernuus, to to form depth and visual movement (Dutch).

Have you considered helping the Plant Finder (plant database on this site) with some photos of different plants? You seem to take some great photos.

Carlos