I like the rock work getting started with the space you have, could really be interesting to grow out.
With the picture you provided it looks like you're either still going through the "ugly phase" of your tank or it's just now happening since you mentioned the GHA. I don't mean the tank is ugly, it's just that early on the algae doesn't have any competition and it grows and makes things not as pretty as they can be.
So it's likely that coral is a bit stressed in the environment it is in as the tank in this stage will have dynamic parameters. The web you see is likely being extruxed from the coral as it acclimates. So your goal now is to keep the tank parameters aligned and stable.