If this is for a shrimp tank and you want lower TDS, then you need to get shrimp specific minerals.
If you plan on keeping Neos on a none-buffering substrate, then you need to add KH as well, which will raise the GH even further - unless, again, you choose shrimp specific minerals. Liquid ones in particular can be even lower in TDS than powdered versions.
If this is for more sensitive shrimp, such as Caridinas, then they'll need a buffering substrate and GH minerals only.
Equilibrium can be used, it's just not geared towards shrimp.