The shrimp do like to sift through the smaller substrate, but I can see them digging in the cracks of yours as well. I guess when you start planting stems you can let me know which you like

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Thanks for looking! The moss jar didn't work out for me. I think moss grows best with some water agitation. I ended up setting a 10G tank with a bubble wand and the moss grows much better there. No filtration of any sort. I also throw my culls from my RCS tank in there and they are surviving as well :X