What kind of crypts are these? I've been trying to figure this out for quite some time now. Also, they are super slow at growing and melt easy. They don't stay rooted either, quick brush against them and it gets uprooted right away. Also, haven't noticed any new growth since I did a substrate change couple months ago. Any tips on getting them to grow better? (the substrate is ADA aqua soil btw with some osmocote root tabs near them.