Whee! Those look like big happy swords. You can try to "stunt" them by removing the large outer leaves. Both the swords & crypts would like a root tab. The staurogyne doesn't look as happy. I try to get to it to be more of a ground cover but it's a bit more work than swords & crypts. I love all crypt species.
I'm sorry, I can't really see you althernaria. Could be I don't know what your specific 1 looks like I've only tried "rheineckii" or mini or whatever I was given...not successful for me very long term. I hope you have better luck
Oh, I see you were posting as I was. I'm just going to say get more real live plants. I don't mind the figurines but the wood & PVC seems too centered. The "golden rule" is (sort of) 3/5 to balance it out. I like the mermaid's "cave"!
I would stick with what you have as stress zyme builds great bacteria when a tanks doing a cycle to help the process, as i always use it when a tank needs cycling and stress coat is for adding for new fish to stop stress in the tank or for injuries.
I use Tetra aquasafe for treating my water with aquarium salt added as it keeps my fish healthy and any cuts it heels lovely, also had salt quality tested and my tank holds 5% salt enough not to hurt them but keep them nice.
I don't use live plants i use silk instead.
The two ions that are present most often in seawater are chloride and sodium. These two make up over 90% of all dissolved ions in seawater. The concentration of salt in seawater (its salinity) is about 35 parts per thousand; in other words, about 3.5% of the weight of seawater comes from the dissolved salts.
if you believe Aloe Vera is a good idea in tour tank water,
Harnish, R.A., Colotelo, A.H. & Brown, R.S. A review of polymer-based water conditioners for reduction of handling-related injury. Rev Fish Biol Fisheries21, 43–49 (2011). https://doi.org/10.1007/s11160-010-9187-1