I have 3 Sulawesi tanks now and will be expanding that to 6 in the next week to make room for some new species. Mine are set up as follows
Substrate: EcoComplete. I am only use Eco since I had the tanks already set up and cycled when I converted them to Sulawesi tanks. Any inert substrate should be fine and I would use sandblasting sand if I was to start over since its black and inert (Ecocomplete increases TDS over time).
Water: 100% RO remineralized with Salty Shrimp Sulawesi Mineral 8.5.
Food: Snowflake food and GlasGarten Bacter AE.
Using this setup I lost less then 10% of the shrimp I imported last time and most of those deaths were DOA's or after day 1. I am getting a bunch more in another 2 weeks so I will have a better idea how this setup works then but I was getting babies from my Yellow Cheeks and Cardinals (maybe my brown camos too but there were a few cherry shrimp in there so it is hard to tell).