Hi, one of my crystal red shrimp finally berried and her eggs were hatched last week. Tiny CRS are seen. However, I still encounter the problem of dying of CRS. I doubted it’s due to the low GH of my tank water. It’s about 3-4. Other parameters are fine: pH 6.6, kH 3, Ammonia and NO2 0, NO3 0-5. Could anyone advise how to raise GH only? Thanks