Dutch Mini-Reef, there's a word I didn't think I'd EVER hear anyone ever use again. If you Google Dutch Mini-Reef darn little comes up, sad as they were pioneers along with Aquareef in the 1980s. I bought 2 original Dutch Mini-Reef tanks about a year ago, cut them apart and put them into storage, when I retire in the next few years I will put them back together.
Collect some small grass shrimp for that Marine Betta, that's what they love to eat and what they eat in their native habitat. I go over onto Maryland's Eastern Shore in the summer and collect them for food for mine.