Thanks Merth, I do really hope they can breeds soon.
Actually, there isnt any CO2 use in this tank at all, I feel like not a fun stuff for shrimp. I do use Fluval soil for this kind of shrimp, help alot in Gh/pH as well. I use my tap water with prime (from backup bucket as always). The TDS about 150-170 at this time, I start change out water once per week at 10%, sometime I just do top off with my backup tap water as well. My tap water is soft enough like under 50 tds, so I do add a bit Salty Shrimp mineral GH to raise up a bit. No fert at all because I dont do any plant in it.
The light fixture is PICO with 10,000K bulb daylight. Moss seem like doing good without CO2 too. Time for light 3 hour from 12am-3am and 6am-9am. I use only 6 hours of light. Scare about 8 hrs which is too much.
I try to keep water parameter as simple as possible for this shrimp.