IM NuvoFusion 20, aquascape done with CaribSea Life Rock. The tank will be Zoa dominated, with Acans and possibly other coral. What recommendations do you have?
I like #2. I would pull the far right off the glass a little more. Maybe swap the middle rock with the left rock so the “cave” or “ledge” would be in the middle. But that’s just me.
More rock. You want 1/3 to 1/2 full. The idea is to give your fish places to hide. Being a nano tank you want a couple caves to retreat to the sand bed while being undercover. You accomplish this by putting a piece of tonga branch on the sand and then placing a rock on top while leaving a small cave. I personally like about 15% free on both sides and build it up like an arch. Do it so you have light reaching the lower tiers so that you can put coral on all levels. You accomplish this by using the largest rocks on the bottom. Make sure you got at least 2" space between the rock and glass. First things first... get at least 25% more rock. Dont worry about boulders. I like to glue small pieces together with that reef welder beads in purple. Boulders are fine for the bottom layer.
I don't think you need any more rock personally.
Definitely think the right hand structure needs to move away from the glass more, but otherwise just have a play and find some designs that please the eye. My Scape took me weeks to decide!