Fish for 20L SPS (HIGH Flow No Sand)

[Coastie Reefer]

Looking for a few fish (no more than 4) that don't mind a good bit of flow (~50x turnover) and that don't require sand. Anyone have recommendations for fish that would enjoy and thrive in this environment?

I'm open to working fish and/or fish with good looks or personality.

Standard 20 long, plumbed into Eshopps Nano Cube Sump. Setting it up for a backup system for SPS. I'm also running full T5s for the first time to see how they'll color up since my main system is mostly LED.

 

[LetItReef]

Few possibilities:
Springeri Damsel- currently have and not aggressive, Two spot Blenny, Barnacle Blenny, Sixline, Bangaii, Yellow Assesor and couple Fire shrimps

 

[minus9]

Assessors, pygmy wrasses (wetmorella) neon or sharknose gobies.