The skimmer adds a tiny bit of flow, especially the remora. I have one myself. I wouldnt consider it a flow factor in the grand scheme of things.
Do you have a filter or a sump for this tank? that would provide more aeration as well.
180g- Mostly BIG fish and some coral. ~80g Nuvo- My coral tank with "happy fish"~ 90g- FOWLR Not the not happy type of fish~ 125g- Freshwater Malawi Cichlids ~10g- Nuvo- The refugees from the Ich of '18