It's been about 10 days since I've live stocked my small 19L nano tank. I bought 2 zebra snails, 6 shrimp (2 blue crystal and 4 red crystal) and a betta. Since then I've lost 3 of my shrimp. Betta seems very lively and happy most of the time, and I've had no issue with the snails either besides them falling off from the underside of leaves sometimes so I have to help them flip themselves. The larger of my shrimp see to be doing fine also, and the ones left have all molted as far as I can tell (from size of the molt) The first shrimp to go I chalked up to stress since it was shortly after receiving them, but the other two seemed to have had issues with molting. One of my blues seemed to have gotten stuck in a molt and the one I lost today was definitely molting. He was acting erratically yesterday (swimming upside down and unable to right himself) so I separated him, but by the time I went to bed he had looked better (swimming better and able to stay on his legs) so I let him go again. He stared molting today though and unfortunately it looks like one of the other shrimp had started making a meal of him before he was finished and I don't think that helped anything. I separated him again but it was too late by that point I've also been having trouble with my plants looking not as healthy as when I got them. I have a java fern, and two anubis plants, nana and barteri I think. The bateri is showing the worst symptoms, with leaf curling and loss of color. The nana is holding up the best but also starting to show some signs of curling. The java fern came with some brown spots and they have spread a little, the tips of a few of the leaves have also gone dark green, slightly transparent. My numbers are as follows ammonia <0.05ppm (the test reads the lowest measurement it can show) Nirites <0.025ppm Nirates ~1ppm ph ~7.5 KH 3 GH <4 The only one I'm worried about his my KH and GH. From my understanding from some research shrimp need good KH for their molting and it's possible my plants are also calcium deficient from their symtoms. Should i look into something to raise my KH?