Yes I have 27 Tangerine tigers living in Neo waters. Around 270 tds along with my blue dreams.
I started with 10 tigers at first, acclimated them for 24+ hrs on drip and then did the same for the rest. Caridinas can live in neo waters 200-300 tds; you just have to spend the time to acclimate them.
I am low on tank space, that is why I am putting cardinas with my neos.
Oh btw... I also have 11 stardust shrimp in the tank as well. For they dont breed with other caridinas.