Installed a Whisper 30 filter on the 15g shrimp tank with a Zoo Med TC-702 sponge prefilter so the tank now has two hob filters. I’ve set both filters to low flow so they don’t buffet the shrimp around. Having two filters will help prevent any oil buildup on the surface. I noticed that the shrimp are feeding 24/7 when I looked inside the tank with a flashlight after the lights were out. Coloration of red cherry shrimp is looking very good.