Here is my evolve 4. Has been running for a while but was just a catch all for my extra plants until a few days ago. I added the black sand and more gravel for some sloping. The back is the beginning of a moss wall, hopefully the moss grows through. Decided what plants i wanted to keep and got rid of some, this is the end result. Plus, just noticed I have a berried female!!! I have only had the shrimp for a few weeks so I am excited.